Going back on 2 dyno tomorrow (Dynapack & Dynojet)
 

28 Nov UPDATE
read post #7



tomorrow I'm going for the first time since I got my flywheel and blown transmission replaced under warranty
I had ign timing problem for the past year and never been able to see why the ECU was always pulling timing every time at the same RPM
(long story)

The dynapack where i use to go read apparently a few % lower than a dynojet and the best I could get with all of my mod was 311whp
my baseline on that same dyno was 256whp




the graph in the picture was a comparison from the OEM Tb and my oversized TB ...

http://www.the370z.com/members/megan...ow-muffler.jpg

I did gained most of the lost power later on during the year but The ECU was getting upset everything and still pulling timing

http://www.the370z.com/members/megan...pink-104-c.jpg


so now the ECU doesn't seem to be as upset as it was for the past year , the Ign timing is right where it use to be from the log I made in the summer 2010.
I'm wondering where the power is gonna be !!


mod are as follow ;

7 AT tranny !!!

Custom oversized CAI & Maf
Oversized Throttle body
HR intake manifold
PPE step long tube header
Custom X-pipe
Custom exhaust/muffler
Uprev

Give us a mods list if you want poeple to take a stab at this lol.

yeah I edited the post right after since I forgot the mod list ,, hehe

Im interested to see how all of your custom pieces work with making power for sure. Can you give a low down on what was causing your ing. problem. Is it something the rest of us should check into?

I guess you didn't get in to see Sasha? Where are you taking your car now?

what caused the problem was probably the cracked flywheel , we try so many way to make the ECU happy but never worked .
Once I got the car back from the dealership after the tranny broke down , I went for a ride to check if by miracle the ign timing would be alright which it does !




I'm going to see Sasha this afternoon since I always went on his dyno

Update !!!

it was a long day of driving and the result if almost to where I was hopping to be .. not perfect but fine for now !

===========================================


Sg-motorsport is where I always went after almost every mods !
Baseline on that same dyno at around 60F was 256 whp
Today @ +- 50F = 324 whp

a gain of 68 whp :eek:
THe Z is a 7At so even less power than a 6MT ,, Im wondering what would be the result in a 6MT car ! hehe

the picture show the last time I went on the dyno fully tuned but with a cracked flywheel. It was upseting the knock sensor which were pulling Ign timing everywhere ,,, I had no control and spend nearly a complete year to figure out what was going on ,, almost traded the Z for an EVO X.

http://www.the370z.com/members/megan...ed-z-evo-x.jpg


the rumor about SG-Motorsport dynapack was it read a few % lower than a Dynojet , today was a good comparaison between them. Even Sasha was a bit suprise by the result.

I made 2 print in STD & SAE for those who wish to see the difference ! :ugh2:



first one in STD
http://www.the370z.com/members/megan...ll-v-power.jpg

second one in SAE
http://www.the370z.com/members/megan...ll-v-power.jpg

So sad to see that Sasha is closing down -.-

Thats quite an improvement!

Seems a little lean to me.
Disclaimer: I'm far from being a tuning expert.

they pluged their sniffer and under Uprev the AFR is around 12.2 which would about 12.6-12.7 of my wideband

I'd be concerned with the power falling a bit at redline. The majority of the cars I have seen (mine included) with gen3's (or similar cai) all make power past 7500rpm, where yours seems to fall flat and die a bit. Just comparing to my dyno, with less mods, my car is pulling pretty much all the way to 8k.

I would think with your cai and headers that wouldn't be an issue. Could it be a tuning issue maybe?

Oh gotcha. Nice and safe :tup:

dont forget that I have the HR intake manifold which give more TQ in mid-range for the cost of a few on the top-end , due to runners length.

the dyno run were done up to 7700-7800rpm ... knowing the fact about the runner length will affect the power at the top end . im not too worry right now because yes the car still need to be fine tuned for sure.
I spend 1 hour on the dynojet first and did most of the quick tuning to have a more stable powerband

I got the car back from the dealership with all of the intake system replaced with the OEM parts and Stock Rom back in the ECU
During that time my HD crashed , I had to redo everything from scrach.

the most important is I found the problem which I had for almost a year !!!

The only thing I noticed was your tq #'s seem to be a little low, besides that it seems all your custom work has paid off. My car did not continue to gain horsepower aswell all the way to redline. My max hp was at about 7,200. The tuners at CIN motorsports told me my exhaust was the culprit (stock nismo exhaust). BTw your custom intake is awesome looking!!!

good numbers man, similar to power made my few NA 370z's on board, does it pull hard now?

did the overbored TB and custom CAI help?