M35 DYNO PROBLEMS....

[rookie55]

I have a 2006 M35, I was at a car show today and they had a mobile Dynojet there. When I was all set up I turned off VDC and used the auto-stick and got into 3rd gear (around 2500 RPMs) and then gave it full throttle. The dash still said "SLIP" and it kept cutting off power to at least 1 of the wheels if not both.

My question is, how do I turn off traction control so I can get an accurate Dyno reading?

[mexillis]

Idk why your getting the slip light on but maybe try doing it in 4th gear. That's what gear I had my tune done in and there wasn't any problems with slippping on a dyno dynamics. I don't even think he turned the slip/vdc off when he did either.

[rookie55]

Thanks for the response but I tried it in 3rd and in 4th, same results. I'm wondering if I should have even turned it off in the first place

[EniGmA1987]

Sometimes (especially lately) even if my VDC is off the car still keeps the stability control on. I dont know if its a bug with the car, or if something is broken.

You can always try overloading the system and forcing it off. Go to an open area, stop, as soon as you hit the VDC off turn the wheel as hard as you can and slam on the gas. The dynamic control system should overload and shutdown pretty quickly because it doesnt know what to do because it was in the middle of being turned off when the car "lost control". A bunch of dash lights stay on but the car will drive fine and have absolutely no stability control of any kind until you restart your car.

Also, 4th gear is the 1:1 ratio and I think it is supposed to be dyno'd in that gear?

[rookie55]

Enigma- I know that a bunch of the lights on the dash were on, weird ones that I haven't seen before. When I tried in 4th gear it wasnt as great of a result but I would assume that stock the M35 should be around 235-245 at least during a dyno, but I was showing 197-207. It mad me kind of pissed that I have $17k invested and it's that low... I am sure the results aren't "true" tho.

[rookie55]

This is a video of the runs, http://www.youtube.com/watch?v=mio5Qbb- ... ata_player

The rear wheel IS moving, it's just my iPhone couldn't keep up haha.

[mexillis]

Well if you think about it your car only has 280hp/tq stock and that's from the flywheel. If you had UpRev you might get more than just 200 from installing your mods. Also some dynos give lower numbers than others but the number isn't what matters is how much faster you are at the track in the qtr mile and how bad you smoke a stock car (M35), lol.

[rookie55]

Mexillis- I hear ya! I definitely know my M is much quicker than a stock M and like you said, that's really all that matters. I was just hoping to have a decent Dyno printout to go with it.

[CPJ LB]

just take that dyno pull as a learning experience...some dyno's run differently.

if you are done with your mods, it may be a good time to get the UpRev and have your car dyno'd in a controlled environment. you will see the mods you added to your car work more in harmony.

I was able to get good results with just the following mods:

UpRev
spacer
z tube
k&n drop in
dual exhaust piping(from cats & larger diameter), w/ x-pipe, hi-flow resonators,
-- w stock mufflers

the dyno I used was a dynopak (Church's Automotive Testing)

good luck with your tuning...I'm sure you'll be happy once you get the UpRev

[rookie55]

CPJ - What UpRev did you get? I know there are a couple different ones they offer. Also, what were your Dyno results?

[CPJ LB]

CPJ - What UpRev did you get? I know there are a couple different ones they offer. Also, what were your Dyno results?

I posted my original results after getting the UpRev earlier in the year (March) I got the Osiris Standard w/ 5 maps and 3 dyno runs (dynapak)

here's what I had:

06 M35 Stock numbers at the crank: 270 tq / 280 hp
Numbers rated at the wheels =
my base lines were: 228.2 tq @ 4938 / 229 hp @ 5953(K&N drop in & stock mufflers w/ x-pipe and 2.25 piping from cats)

Tuned: 238.6 tq @ 4767 / 252 hp @ 5952

within a month after the original dyno I added the z-tube, spacer and retuned the exhaust a little more (high flow resonators, tweeking the exhaust bends leading to the mufflers) I may get a set of Megan mufflers, but I really like the quietness of the ride -- for now.
here are the numbers after everything was added:

245 tq @ 4745 / 265 hp @ 6300

the real enjoyment is getting better fuel efficiency, more pulling power at fwy speeds and the use of any 5 maps (fly by wire) -- sport, valet, security, stock, fuel efficiency

what's the best way to calculate the numbers at the crank(after my final tune)??? anybody??

I think if/when you get yours tuned, you'll be pleased to see the results. I'm also curious to see if the CAI really helps -- there are mixed reviews about the CAI...the guys at Church's Automotive Testing were great. very knowledgable and cool. they had an EVO there with close to 450 whp!!! it was stealthy looking but the owner smiled and said he loves it that way so blowing past the unexpected is a treat...

Let me know if you have any other questions...

thanks,
Anthony.

[EniGmA1987]

Gaining 36 HP just from the tuning is pretty nice! Nice torque gain too. Achieving higher torque at a lower RPM is nice

[The00Dustin]

[quote="CPJ LBwhat's the best way to calculate the numbers at the crank(after my final tune)??? anybody??[/quote]The best way would be to hook the crank up to a dyno. Unfortunately, I'm not sure what the most accurate mathematical way would be. If I wanted to have a guestimate, I would take the % loss between my stock crank and dyno numbers and work backwards to find the same % loss to get the new dyno numbers. This way I would know my estimate was conservative. However, you don't have a stock dyno number because you already had mods. You also don't have a comparable crank number since it was most likely (99.99999% chance)determined on a different dyno and probadly even a different dyno brand/model. Then there is the fact that you potentially also had loss from wear too. Anyway, it may be true that you lose a set amount at each gearbox, in which case you could just find the simple difference (crank minus wheel) and add that to the new wheel numbers, but that doesn't change the fact that you most likely didn't still have factory crank numbers when you started. I'd say stick with the wheel numbers so you know you have solid data and be happy with it, only referencing stock crank numbers in passing to point out that you are certainly higher than that at the crank now.

[rookie55]

CPJ- did u have to send your ECU into the UPREV place of was this something that they sent u? I know some of those companies require u to send in your ECU and I don't know what the hell I would do without my car for like a week or two.

[mexillis]

look at the UpRev website, they have authorized dealers in your area (sometimes) or you can send it in. If you have questions you want to ask them you can call em, they're pretty cool and i have called em a few times before.

[CPJ LB]

@ 00Dustin - ya, I know, I know...I'll be satisfied with the 'wheel' numbers... it seems that I would just have to look for someone else who dyno'd their stock M35 to really compare...it appears I would have to be an engineer to figure out the crank numbers...LOL...too much work...I'll enjoy what I have.

@ Rookie - the shop downloaded everything from UpRev -- they initially had to find out the compatibility with my car and the most current version of the tune. took about 5 mins...then they plugged in via the OBD II port and worked their magic...the good thing about it is they have my info on their file and any other time I come back to re-tune (from any other add on mods) they have my history and its all good. I'm really looking at opening up the exhaust a little more, but I have to find the happy medium of good power/better breathing and less noise.

@ enigma -- I don't remember if you got the tune as well, but I know you had a lot of other mods....ya, it's a nice gain. it's good to know that our engines can produce more than stock...

[rookie55]

I appreciate all the info! I am actually going to have the car tuned with Osirus or UpRev; the only bad thing is that the closest place that deals with them is 3 and a half hours away. Oh well, it will be well worth it when it is done.

[CPJ LB]

ok...it'll be worth it.

UpRev has different options (one of which is the Osiris)...just make a day trip out of it and when you drive back, you'll have some time to make some good runs.

here's the link:

http://www.uprev.com/

let us know when you get it done....cheers.

[rookie55]

Well I am doing the $500 package, so I think I will be getting the 5 maps that you said you got. I definitely want to see how much of a difference I get between my base run and my tuned run. I will be sure and keep everyone on this post updated.

I will be heading up to CIN Motorsports in Charlotte, NC Saturday morning so I will update everyone as soon as I have some results!!

[CPJ LB]

I was thinking of the possible reasons that you originally got 'not so good results' on the dyno...it could be the following reasons:

your car could be running lean -- the ECU is probably trying to adjust -- I can't remember the term, but 'timing' or 'pulling codes' ....I think..?

you have 20" wheels so it used/took more power to turn those bad boys...

possible heat soak on your intake (the dyno was outside -- not sure the temp, but if you add the outdoor temp and engine temp)

I'm sure the pro-tuners will need to adjust your air/fuel mixture to get you balanced and your M will provide true numbers...

best of luck and keep us posted...

[rookie55]

Sorry it took so long for me to post the results, but I was making a small video of the whole thing. The results weren't AS GOOD as I expected, but I need to get high flow cats and an aftermarket Y pipe; 235 hp was all we could get out of the tune because the cats were so restrictive. Here is the link to the video though; I will post when the new cats and new Y pipe are installed...

http://youtu.be/bTe1qdRRjwk?hd=1

[mexillis]

Post up your dyno sheet too. What kind of dyno was it on? Also what are you going to get to replace your parts, custom or pre fab? Will you also get headers too?

[rookie55]

This was done on a Mustang Dyno, the conditions weren't too hot, maybe 85 degrees when we started. I already have the DC Sports Ceramic headers; but I am going to order the Berk High Flow Cats and the Megan Racing Y-Pipe. The stock cats and Y-Pipe are extremely restrictive and the guys at CIN Motorsports weren't able to get any more power or torque out of the car with the stock parts. I do, however, notice about a 2-3 Mpg gain in the city and about a 4-5 Mpg gain on the highway... These days ANY gain on Mpg is great, especially if a little power is gained with it!!

(Sorry these are just links instead of actual pics, I am doing this all from my iPhone)

This is the before and after, the before is the dotted lines and the after is the solid lines:
http://www.flickr.com/photos/rookiedesignz/6129896311/

This is just the final run:
http://www.flickr.com/photos/rookiedesignz/6129895957/

[cruzad3r]

how are you accounting for the increase in MPG? are you looking at the screen or actually doing the calculation ( total miles driven divided by total gallon of gasoline) this is assuming you zero out the miles and drive until your low fuel light is on. thanks

[rookie55]

I was actually doing the calculations. resetting the miles and going on a full tank until the light is on and the screen shows *** for Miles Til Empty haha.

[EniGmA1987]

UpRev is proven to give an MPG increase along with its HP increase. I believe it when he says he is getting better MPG

[CPJ LB]

Sorry it took so long for me to post the results, but I was making a small video of the whole thing. The results weren't AS GOOD as I expected, but I need to get high flow cats and an aftermarket Y pipe; 235 hp was all we could get out of the tune because the cats were so restrictive. Here is the link to the video though; I will post when the new cats and new Y pipe are installed...

http://youtu.be/bTe1qdRRjwk?hd=1

...Man, I thought for sure you would see some big gains, but I guess you're right about opening up the exhaust piping a little bit more -- since you have a ton of flow going into the motor -- now you gotta get it all out!!! keep us posted...