What is the best Chip to buy for '07 M35..

[steelcity]

Do all your upgrades need to be done before installing an ECU or can you install it and upgrades can be done as you go forward?

Does Nissan/Infiniti have those ECU's that are programmed by the dealer such as VW/Audi?

[Ilya]

The only ECU tune worth a damn for these cars is UpRev. It's not a chip, you flash your existing CPU.

[steelcity]

they also do tuning for engine and trans as well correct? do you by any chance know what kind of HP gains come from flashing the stock CPU?

is uprev only located in NY?

[seymore4]

Uprev HQ is actually located in Austin TX, they do dyno tuning there as well as R&D and software development. They have a network of dealers and "protuners" all over the world who use their software to reflash and tune cars.

You can either get dyno tuned in person (more $$) or do it over email with datalogs you record using the Uprev software and one of their special reflash cables

[svard75]

Do all your upgrades need to be done before installing an ECU or can you install it and upgrades can be done as you go forward?

Does Nissan/Infiniti have those ECU's that are programmed by the dealer such as VW/Audi?

If you are planning on major upgrades such as intake, plenum spacer, port/polish, headers, exhaust then wait until you have them all complete and perform the dyno tune. Also make sure you run at least 2 tanks through your car with the gas you intend on running. For example I tuned my car with 94 octane for optimal results. I have 5 other maps that I can select in case I am feeling cheap and only use regular gas.

As everyone else mentioned the uprev tune is the only tune that is real. Just in case if you are thinking of adding an ebay ECU chip watch this

[steelcity]

Uprev HQ is actually located in Austin TX, they do dyno tuning there as well as R&D and software development. They have a network of dealers and "protuners" all over the world who use their software to reflash and tune cars.

You can either get dyno tuned in person (more $$) or do it over email with datalogs you record using the Uprev software and one of their special reflash cables

Ok that is good to know. Any idea what kind of gains in HP if the car is stock? or with just an intake?

[steelcity]

Do all your upgrades need to be done before installing an ECU or can you install it and upgrades can be done as you go forward?

Does Nissan/Infiniti have those ECU's that are programmed by the dealer such as VW/Audi?

If you are planning on major upgrades such as intake, plenum spacer, port/polish, headers, exhaust then wait until you have them all complete and perform the dyno tune. Also make sure you run at least 2 tanks through your car with the gas you intend on running. For example I tuned my car with 94 octane for optimal results. I have 5 other maps that I can select in case I am feeling cheap and only use regular gas.

As everyone else mentioned the uprev tune is the only tune that is real. Just in case if you are thinking of adding an ebay ECU chip watch this

First time I even hear of the plenum spacer to be honest. I did have intentions on getting the injen intake pretty soon. Headers wise? All I see is the DC headers on youtube, is that the best route to take?
I strictly put '93 gas in the car. As far as porting and polishing, what in particular? where the headers attach on the block? You're not saying the head?

Great video on the ebay ECU BTW. If I do go crazy on the car I will definitely go the uprev route though. Flash the ECU, trans and engine IF I decide to go crazy.

[svard75]

Headers on an M35 are difficult because they would have to be custom. I believe our steering block is in the way of the G35 headers on the drivers side.

Easy and affordable upgrades
Replace the intake tube with the stillen Z-Tube. Leave the rest stock.
Plenum spacer (Motodyne or Skunk2)
The port and polish I am talking about is very mild and has to do with the plenum. When I took my upper plenum off I decided to take the lower section off and clean it up (It was sticky and oily). After cleaning the oil off I noticed how dimpled the surface was from the casting process so I took my dremel to the entire surface including the runners and smoothed it all out. Using a sanding bit with larger grit to smooth it out quickly then moved to smaller grit then wire wheel and finally polish wheel. This took me 3 hours. In the corners I used a flexible sanding bit.
HF Cats Y pipe and axle back exhaust can be purchased from Megan Exhausts or custom built.
Install a grounding kit
The cool thing about our engines is they are multi platform so if you find generic engine upgrades for a Z350 (non-revup) or G35 (non-revup) then they technically should fit such as underdrive pulleys or something bigger such as cams, heads, etc.

Uprev tuning is a license that is installed on top of your ECU which allows the tuner to create new fuel, ignition maps and a few other tweaks for transmission shifting. I paid $450 for the license and 1 hour of tuning on the fly with the tuner sitting next to me while I performed hard pulls on the highway. Well worth the upgrade and likely the most bang for your buck of all basic mods listed.

Other than these there aren't that many mods available. Our cars are built quite well from the factory and there hasn't been much demand for anything more serious such as underbody tie rods, front and rear strut tower braces, larger sway bars, greater selection of coilovers, carbon body panels, and others. If you are looking for a car to modify so it looks like the rides from Fast and Furious I think the G35 or Z350 should have been the way to go.

[steelcity]

I couldn't agree with you more. I feel these cars came out the factory not needing anything. I am leaning towards some effective but inexpensive upgrades like the ones you've mentioned above. This isn't the type of car I want to turn into a project. But I wouldn't mind some minor performance upgrades on it. I'm not gonna lie though. Initially I did want to get the car to break into the 12's. But that'll be Chapter 7 waiting to happen haha.

[jdjack68]

I looked up a Stillen z-tube for the M35, the website says its only compatible with the G35 and FX35. Apparently some of you guys out there have managed to use the z-tube in spite of that. Were there any modifications necessary to accomplish this?

Also, can anyone provide a little more detailed info on the cost involved with Uprev? svard75 stated he was able to do it himself for $450. From what I've seen on Uprev's website, the software alone now costs $500. Has anyone paid to have this done at an affiliated tuner shop? If so, what can I expect to pay to have this done?

[seymore4]

Also, can anyone provide a little more detailed info on the cost involved with Uprev? svard75 stated he was able to do it himself for $450. From what I've seen on Uprev's website, the software alone now costs $500. Has anyone paid to have this done at an affiliated tuner shop? If so, what can I expect to pay to have this done?

No, he paid $450 for a tuner to do it for him. Just the software license, and some street tuning. No dyno. The $500 you pay for Osiris standard includes the reflash cable so you can reflash it on your own and have it tuned remotely via datalogs. A much better deal since you can then reflash back to stock, remove the uprev tune, and sell it used to someone else later on if you want to. If you're interested in this feel free to PM me.

If you want to get dyno tuned at a shop expect to pay $600-800 for just the license and tune, no cable. Also since the M's are not a "core vehicle" uprev has an additional $200 charge to add support for your ECU if its not already supported. http://www.uprev.com/romDump.html

[jdjack68]

Thanks for the info, appreciate the response. Can you wind up doing damage to your vehicle using Osiris? Any known issues involved with this that I should be aware of?

Also, how much of a power gain can I expect from this?

[svard75]

seymore4 is correct. I had a licensed tuner download the license then sat beside me while I drove watching the sensors and tweaked a bit then had me try it. Tweaked again then had me try it again. We went all the way to the max or until I started saying it doesn't feel any different and he backed it down a bit to keep it safe. He also removed the speed limiter and raised the rev limiter to 7k.
What I did prior to getting tuned was:
- installed the skunk2 composite spacer
- ported and polished my upper plenum and lower runners
- installed the stillen Z350/G35 Z-Tube (Yes they are 100% compatible with the 06-08 M VQ35DE engines, no modifications required)
- Filled my tank with the gas grade that I would be using every time so 91 in my case

The beauty of doing this through seymore4 is you have the cable and software so as you add performance upgrades you can resend the data to him for additional tweaks as needed. Unfortunately I would have to pay my tuner another $75 each time I revisited him for tweaks.

BTW unless you add some sort of forced induction, fuel management upgrades and internally built engine you're never going to hit 12s. Not even high 12s The best you'll ever get out of an M35 with bolt-ons is low 15s high 14s if you're talking 1/4 mile.

[seymore4]

Thanks for the info, appreciate the response. Can you wind up doing damage to your vehicle using Osiris? Any known issues involved with this that I should be aware of?

Also, how much of a power gain can I expect from this?

As long as the guy doing the tuning knows what he's doing the car will only run better. All the tables in the tune start 100% stock and we just correct them based on how its performing in real life.

Only known issue is that they can't get the cruise control light to blink on the dash when you switch maps with alot of the M's, something to do with the intelligent cruise. Map switching still works fine tho

[M35Squirrel]

All the tables in the tune start 100% stock and we just correct them based on how its performing in real life.

I emailed UpRev asking about e-tune for Vortech V3 Supercharger, they very kindly suggested the brands of injector and fuel pump they prefer to work with but would NOT support forced induction through e-tune...... Would you know any shop that can offer e-tune service on forced induction?

[seymore4]

All the tables in the tune start 100% stock and we just correct them based on how its performing in real life.

I emailed UpRev asking about e-tune for Vortech V3 Supercharger, they very kindly suggested the brands of injector and fuel pump they prefer to work with but would NOT support forced induction through e-tune...... Would you know any shop that can offer e-tune service on forced induction?

No one. And you would be stupid to try and do it with a VQ

[M35Squirrel]

And you would be stupid to try and do it with a VQ

e-tune is not preferred, but how would that be stupid on a VQ? even with a dyno tune, they start with a base tune and run through the gears. and as with automatics like M35, most tunes only do WOT through 3rd gear. again it's not preferred, but if you can find a good stretch of empty road WOT through 3rd isn't a problem.

[seymore4]

And you would be stupid to try and do it with a VQ

e-tune is not preferred, but how would that be stupid on a VQ? even with a dyno tune, they start with a base tune and run through the gears. and as with automatics like M35, most tunes only do WOT through 3rd gear. again it's not preferred, but if you can find a good stretch of empty road WOT through 3rd isn't a problem.

Well, good luck with that

[steelcity]

I'm a newbie guys. What's WOT?

[szh]

I'm a newbie guys. What's WOT?

Wide Open Throttle.

Z

[steelcity]

I'm a newbie guys. What's WOT?

Wide Open Throttle.

Z

Thank you Z