Time for a tune! Uprev

[Importroller]

Well, after much searching and so little options, i decided I'm going with Uprev for my ECU tune. I've contact a local tuner who is on the Uprev site as an authorized tuner. I'm scheduled to go there on the 8th for my tune. I figured while i'm building my turbo kit, might as well get all i can out of this thing NA first. i searched around on here, and didn't come across any threads of anyone who has already done this to a 4th gen V6 or coupe. I was debating about this or the Bully Dog GT, and for the extra $200, the uprev is a way better option especially for my future plans. I have already contacted Uprev, and they assured me that they do already have the program for the 4th gens, so hopefully it turns out really well. I want to break 300whp NA before i go boosted.

[rcboy514]

sweet!

[mattyfo0z]

Any more information you can give on the software, and how the 4th gens respond to bolt ons + tuning? I'm interested..

[Importroller]

I will once it's done.I get around 270whp currently, so we will see what happens.

[mattyfo0z]

Oh, wow.. got a mod list or build thread somewhere I could check out? Those are nice numbers.

[Importroller]

no build thread, my mod list for power isn't anything crazy, my motor just really likes them, and the 6spd is a definite Plus!

Power adders.
K&N Typhoon intake (the very first one ever made)
Racing Line Y-Pipe
stock catback last time I dynoed at 265whp
Now I have a 3" catback split to 2.25" at the rear axleback

[mattyfo0z]

Does the 3" exhaust have any more benefits as opposed to the 2.5"? I'm gonna get a custom exhaust done as my first mod, so I'm curious.

[Importroller]

The vq loves the 3". 2.5" is too small for the 3.5's displacement. But to get optimum and equal flow, split the 3" to two 2.25"@ the axle back location.

[mattyfo0z]

Oh most definitely. I was actually thinking about going 3" on the exhaust just because not a lot of people do and I know it will sound really good.

Now to search for some Magnaflow mufflers that look good on the A/C rear end...

[One Crazy Max]

not to sound rude or anything, because im actually not being rude, and im looking forward to your results, but you dont have any power adders as yet. everything you listed frees up power that was restrained from the factory. a tune will just level out the power band and give your current setup a better a/f ratio compared to the pig rich stock map.

i have similar mods, except for the y-pipe. i intend on getting the y-pipe later this year, and at the same time im going to go with a full 3" exhaust from the y-pipe back, with no third cat. right now from the cat back i have a 3" into a 2.5" by the axle, and then back into two 3" mufflers, video for that is here http://www.youtube.com/watch?v=mV6fft3_hFY

i dont think you should be going with a 3" exhaust and back into 2.25". again, not to sound rude but, you kind of contradict yourself because you say 3" is best for optimal flow, and that 2.5" is too small for the VQ's displacement. i get that you might want to retain back pressure by going with smaller piping axle-back, but you mess up with the flow, and you will stifle the motor as you go higher into the powerband. and i know you've seen your dynograph, because you posted it up, i shows that the VQ makes power all the way to redline and doesnt really level off. with a tune, that graph will climb way beyond what you dyno'ed before.

anyway, i look forward to what youre gonna be getting done, cant wait to see. i will also post up pics and videos of my setup to come later this year.

[AdamR]

not to sound rude or anything, because im actually not being rude, and im looking forward to your results, but you dont have any power adders as yet. everything you listed frees up power that was restrained from the factory. a tune will just level out the power band and give your current setup a better a/f ratio compared to the pig rich stock map.

i have similar mods, except for the y-pipe. i intend on getting the y-pipe later this year, and at the same time im going to go with a full 3" exhaust from the y-pipe back, with no third cat. right now from the cat back i have a 3" into a 2.5" by the axle, and then back into two 3" mufflers, video for that is here http://www.youtube.com/watch?v=mV6fft3_hFY

i dont think you should be going with a 3" exhaust and back into 2.25". again, not to sound rude but, you kind of contradict yourself because you say 3" is best for optimal flow, and that 2.5" is too small for the VQ's displacement. i get that you might want to retain back pressure by going with smaller piping axle-back, but you mess up with the flow, and you will stifle the motor as you go higher into the powerband. and i know you've seen your dynograph, because you posted it up, i shows that the VQ makes power all the way to redline and doesnt really level off. with a tune, that graph will climb way beyond what you dyno'ed before.

anyway, i look forward to what youre gonna be getting done, cant wait to see. i will also post up pics and videos of my setup to come later this year.

It splits into two 2.5" sections.
Also, backpressure wouldn't help things at all. That is a myth.
Either way, if you think that he will not gain power from a tune, you are mistaken.
Also, the power-adder thing is just semantics.

[wade001]

not to sound rude or anything, because im actually not being rude, and im looking forward to your results, but you dont have any power adders as yet. everything you listed frees up power that was restrained from the factory. a tune will just level out the power band and give your current setup a better a/f ratio compared to the pig rich stock map.

i have similar mods, except for the y-pipe. i intend on getting the y-pipe later this year, and at the same time im going to go with a full 3" exhaust from the y-pipe back, with no third cat. right now from the cat back i have a 3" into a 2.5" by the axle, and then back into two 3" mufflers, video for that is here http://www.youtube.com/watch?v=mV6fft3_hFY

i dont think you should be going with a 3" exhaust and back into 2.25". again, not to sound rude but, you kind of contradict yourself because you say 3" is best for optimal flow, and that 2.5" is too small for the VQ's displacement. i get that you might want to retain back pressure by going with smaller piping axle-back, but you mess up with the flow, and you will stifle the motor as you go higher into the powerband. and i know you've seen your dynograph, because you posted it up, i shows that the VQ makes power all the way to redline and doesnt really level off. with a tune, that graph will climb way beyond what you dyno'ed before.

anyway, i look forward to what youre gonna be getting done, cant wait to see. i will also post up pics and videos of my setup to come later this year.

It splits into two 2.5" sections.
Also, backpressure wouldn't help things at all. That is a myth.
Either way, if you think that he will not gain power from a tune, you are mistaken.
Also, the power-adder thing is just semantics.

.you beat me to this response lol.

[One Crazy Max]

not to sound rude or anything, because im actually not being rude, and im looking forward to your results, but you dont have any power adders as yet. everything you listed frees up power that was restrained from the factory. a tune will just level out the power band and give your current setup a better a/f ratio compared to the pig rich stock map.

i have similar mods, except for the y-pipe. i intend on getting the y-pipe later this year, and at the same time im going to go with a full 3" exhaust from the y-pipe back, with no third cat. right now from the cat back i have a 3" into a 2.5" by the axle, and then back into two 3" mufflers, video for that is here http://www.youtube.com/watch?v=mV6fft3_hFY

i dont think you should be going with a 3" exhaust and back into 2.25". again, not to sound rude but, you kind of contradict yourself because you say 3" is best for optimal flow, and that 2.5" is too small for the VQ's displacement. i get that you might want to retain back pressure by going with smaller piping axle-back, but you mess up with the flow, and you will stifle the motor as you go higher into the powerband. and i know you've seen your dynograph, because you posted it up, i shows that the VQ makes power all the way to redline and doesnt really level off. with a tune, that graph will climb way beyond what you dyno'ed before.

anyway, i look forward to what youre gonna be getting done, cant wait to see. i will also post up pics and videos of my setup to come later this year.

It splits into two 2.5" sections. - ummm no. he did say it splits into two 2.25" @ the axle-back location.
Also, backpressure wouldn't help things at all. That is a myth. i never said back pressure would help anything. i said that he might want to retain back pressure, which would give him more throttle response down low, and stifle the motor up top.
Either way, if you think that he will not gain power from a tune, you are mistaken. i completely agree with you that he would gain power from a tune, never said he wouldn't. i said that with a tune the cars power band would keep climbing up top.
Also, the power-adder thing is just semantics.

im not sure what you were reading, but im pretty sure you should read it again because i dont think you read it correctly.

[One Crazy Max]

also, back pressure helps increase throttle response, but you lose power up top because the motor wont be able to breathe efficiently, but that doesnt really matter with smaller engines, but if youre running a turbo or a bigger engine like the VQ it kind of does matter.

[Importroller]

Back pressure is secondary to maintaining exhaust flow velocity.

[wade001]

You don't want any backpressure. Why do you think the early 2000's altima 2.5's had engine issues? Because the exhaust ( probably the cat) got clogged and created to much backpressure, forcing exhaust gasses back through the exhaust valves, which destroyed the seals causing oil to be burned. I don't really feel like explaining exhaust design though, if you really want to know about this stuff I guess you will find the time though .

[Importroller]

some backpressure is ok, but these guys seem to be talking about increasing the backpressure, when the power is made by increasing the velocity of the exhaust flow, and keeping the heat inside the piping to increase the velocity even more. When I got my catback done in the 3" split to 2.25" at the axleback (which by the way is an even distribution of flow, if you increase it to 2.50 split, the velocity will decrease from the axleback to the mufflers) the car gained a smooth increase in power all the way through. There wasn't any sudden jumps in acceleration, it was very smooth through the full RPM range. The shop that built my exhaust is the same shop that invented the X-Pipe and is the tester for Dynomax & Borla.

[Hercman1]

Hey Guys!

I've been on Nico Club several times since March and have used these forums as an extremely helpful reference. Everyone here is awesome!

I recently got my 2008 Altima Coupe 3.5 SE with CVT transmission tuned by Uprev at JEImports in Baltimore, MD. Great group of guys - especially the owner James. We had a bit of trouble at first since the CVT does not have any real gears. The first tune was done on the Uprev Dyno, which connected directly to the rotors and read everything that way. It definitely unlocked hp and torque at low to mid speeds (until about 75mph), but it would then run lean and lose a bit of power past that. Also, the "gear" ratios in Manual mode were a bit off. As in, my first would last up to about 50mph and second I would last up to 75 mph. To fix the issues mentioned, we did a street tune. He was able to fix the problems with some tweaking and now it feels great! It's a lot more responsive and you can definitely feel the extra hp and tq across the board. More so between 20-80 mph. According to the dyno sheet, 258 hp and tq at the wheels (I can scan and email upon request).

Performance Mods I have:

K&N CAI
Raceline Y-Pipe
Borla Catback Exhaust System
Custom 2.5'' Mid-Pipe (from Y-Pipe to catback exhaust)
Stillen Lightweight Pulley w/ shorter belt

I hope this helps with any decisions regarding UpRev tuning!

[Importroller]

This saturday I'm going in for mine. Glad someone else has already done it. Luckily I have a Manual, so it should be much easier to tune and get more power out of it.

[Importroller]

!

Today was not a good day at the dyno. Uprev lied to me twice in two emails, and once to the tuner. I asked them to confirm they supported the 07 3.5 Altima & they assured me they do. Well, we hooked everything up, started the ROM download, and it froze. The ecu code is different for my car. We tried the ROM for the 08s, and my car took it, but then it wouldn't start. After a few minutes we got it running, but it wouldn't idle. So now we have to wait for Uprev to get back to us with a solution.

[Hercman1]

Aww man that sucks! Yeah, they had to download my ROM and send it off to UpRev first, before we did the tune. Once they responded and returned the "cracked" ROM, the shop called me in so we could Dyno and street tune. That blows man, I hope it works out!

Herc

[dldjros69]

Aww man that sucks! Yeah, they had to download my ROM and send it off to UpRev first, before we did the tune. Once they responded and returned the "cracked" ROM, the shop called me in so we could Dyno and street tune. That blows man, I hope it works out!

Herc

Yup the copied my rom! We waited 2 weeks and everything worked great!

[Importroller]

We suspect that is what I will be doing too.except I may have to send my ecu in. which it's fine as long as it doesn't take forever. I can go a week or two without driving it.

[QR25DE]

!

Today was not a good day at the dyno. Uprev lied to me twice in two emails, and once to the tuner. I asked them to confirm they supported the 07 3.5 Altima & they assured me they do. Well, we hooked everything up, started the ROM download, and it froze. The ecu code is different for my car. We tried the ROM for the 08s, and my car took it, but then it wouldn't start. After a few minutes we got it running, but it wouldn't idle. So now we have to wait for Uprev to get back to us with a solution.

Uh what? There is no "generic" rom you can load for your car. You are required to send UpRev a dump of your ECU made with Osiris. They will recode the dump file into a file you can use with the software.

Was this done or were you trying some generic files?

[Importroller]

i think you misunderstood.

Uprev has not done a 2007 yet, so they don't have a cracked ROM for the 2007. Mine will be the first. The ROM for 08 is different, but it was close enough that my computer accepted the code, but since it is not the correct code, it through my computer into a weird loop and it couldn't read correctly. Uprev and Dave got back to me, and told me they have a "back to stock" ROM that he is going to put on my car so it can go back to normal, then after i drive it for a few days, he will then dump the ROM, and Uprev will be able to crack it so then they will have the cracked code for the 07 ECU. Turns out Nissan changed the ECU setup from 2007 to 2008. Hell, for 08 turns out there are 10 different ROMs Uprev has for that year altima. but some of those are interchangeable. So I should be able to drive the car normal either tonight or tomorrow (schedules allowing). and I will probably just leave my car with him over the weekend since I'll be out of town, and he can work on it then.

There isn't a "generic rom" to use to tune the car. It has to be a ROM that the ECU recognizes and all years are different in the ROM packages

[QR25DE]

I know, I use UpRev as well.

I'm curious as to why another ROM was even tried because it wouldn't have worked anyways. There's no way a ROM from a different ECU Part number will work with your current ECU. This is certainly the reason for all the issues.

Typically (my experience was the same, no one had used it on an 2009 Altima Coupe), with Osiris you hook up the cable to the car, dump the ECU to the laptop, and send the dump to UpRev for conversion. Once they send you the file back and your backtostock ROM you are good to go.

Who's idea was it really to use another ROM to see if it would work? This is just plain stupid, it will never work. The code/ECUs are totally different. Even for the 2.5L Altima Coupes there are 20+ ECU part numbers out there with different code. All would have to be dumped and sent to UpRev for cracking.

On a side note, there are some hidden features in Cipher that you may want to know about. Open Cipher, hold down Control or Shift (cant remember, at work) and click on the 350z 12 times. You can see another button show up to pull keys and stuff from your ECU if required.

I've been through this software over and over again and what was done should have never been suggested, it's like trying to flash Android on a BlackBerry Smartphone, it's not gonna work haha.

[QR25DE]

Aww man that sucks! Yeah, they had to download my ROM and send it off to UpRev first, before we did the tune. Once they responded and returned the "cracked" ROM, the shop called me in so we could Dyno and street tune. That blows man, I hope it works out!

Herc

Yup the copied my rom! We waited 2 weeks and everything worked great!

Danny, differences aside, and apologies for way back when there was a fight etc, is there any way you can get the shop to provide your tuned ROM and your back to stock ROM to you? I'd like to compare it to mine and see what tuning was done. I'd be willing to send a couple buck your way if you could get this.

Thanks,

Scott

[Importroller]

The tuner tried to do the other ECU code to see if it was compatible. Usually if it isn't, the ECU won't even accept the ROM, but for some reason mine took it. But it will all be fixed later this week

[QR25DE]

The tuner tried to do the other ECU code to see if it was compatible. Usually if it isn't, the ECU won't even accept the ROM, but for some reason mine took it. But it will all be fixed later this week

The tuner helping you is trying to smooth it over... The ECU may accept it because it's in the same family, but the chips may be different in the ECU and the code may not be compatible. Basically there is a chip in in the ECU where this code is stored. Typically you could write ANYTHING you wanted to to this chip. If the right headers and footers are present in the file being flashed but the code is wrong or incompatible, it would flash fine but may damage the ECU or the engine itself when trying to start it.

I would honestly take it to a different place to tune it. Is this shop UpRev certified? Even if they are it seems this tuner is really inexperienced with UpRev. The sad thing is it's costing you time without your car. Sucks a lot.

If you're ok and don't mind that then stick with it, but if they screwed up this basic basic install, well...

Just my opinion.

[Importroller]

Car is back to normal. He uploaded the stock ROM. To me, it's just a car, and stuff happens. Should be tuned this weekend