Kinda dissapointed in the numbers i put down but i understand the ECU is holding HP back.
Just got my car dynoed today on a dynojet 248 numbers are SAE corrected Temp at time of dyno was 88degrees F pretty hot socal temp. runs were back to back. I believe with the TS ECU Reflash i should be hitting 260rwhp or close to it.

Dyno shows that im running rich after 4700rpm to redline

my mods are:
Crawford Cast Plenum
Crawford Hiflow Cats
DC Headers
Gruppe S ypipe
PE Exhaust
JWT Pop charger
MPR ground kit
NGK Iradium sp(stock heat range)
Unorthodox Crank U/D pulley

 

Never trust a dyno as being 100% law. My Z dyno'ed at only 230whp on a Mustang dyno.

My advice is to get a baseline without doing any mods and them dyno after you did some mods all on the same dyno.

 

I'm not sure, but could your a/f curve be flatter? And thus > power. Good luck.

 

add around 15-20whp for a mustang-dynojet comparison putting u at around 260ish whp which isnt bad at all..

 

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i don't know if this makes a difference but when i had the safc II when installing it i cut the wrong wire but then soldered it back together so it shouldve been fine right??? but then when i hooked everything up correctly it would show knock with all default settings? so i disconnected the safc II removed it and soldered all the stock wires back together.

Even without any tuning with the SAFC II it showed knock which is kinda weird?

 

Mustang and DynoJet are 2 different companies.

 

Too bad you didnt dyno the car before the mods :0(

 

i heard running with a fan or without a fan infront of the car on the dyno makes a different but does size of the fan matter because seriously the fan that they had infront of my car wasn't all that big.

 

This is probably because your ECU is compensating for the extra air by richening the mixture. Tuning the ECU will allow it to run more lean, the way the mods "want" to run.

I have seen guys with carbon build up on their spark plugs when running that rich, make sure to check them out from time to time... not to mention all the hesitation you'll be getting if it already has build-up.

 

your mods look good enough to get you in the 260 range, except for those dc headers. i was never very impressed with them. if you really want a set of shorties get the crawford's.

 

Im running NGK iradium plugs at stock heat range are those the correct ones i should be running?

thats whats making me trip out i know i should be making more than 246rhwp my car feels very strong i don't know if it was dyno parameters or if its my ECU holding me back i'll try the Technosquare flash and see what happens.

 

Do all the ECU's in every Z out there that doesn't have a ECU reflash and have bolt on's, will be restricted no matter how much they modded their Z?

 

Wow you have almost all the bolt-ons and headers, and your running rich. I have similar mods minus headers and I was WAY lean(over 15.2:1), funny how different Z's react to mods. Even though your kinda rich I would have expected higher numbers, good luck with the flash, it did my car good.


It depends on every car, like I mentioned I was 3 pts leaner than this guys dyno with less mods. I have also seen a Z with all the bolt-ons and cams have a decent around 13.1-13.5 a/f with no ecu tuning at all. It depends on your car, but Id say after a few bolt-ons 90% of us would need a reflash to maximize our mods.

 

He did dyno on a dynojet...

 

I've posted elsewhere, but I'll add it so it's in this thread as well:

259hp, 247tq

mods:
JWT pop
Crawford Plenum
UR Pullies
Kinetix Test Pipes
Greddy EVO II

5th gear pulls, dyno-jet and NO ECU reflash.

So I'm 10hp higher than you without headers, and basically the same mods. You may want to look into dumping the y-pipe and going true dual. Just a thought.

 

every car is differen't you may have had a good 13:1 or close to it a/f ratio but on mine i show running rich after about 4700rpm which is robbing some power as for ypipe nismo exhaust is ypipe and shows similar numbers to some of the true duals. i think with all my mods being breathing mods the only way the ECU could compensate for the excessive air was to dump fuel in thus me running lower numbers than people with same mods minus headers. i believe if i did put my stock headers on i might actually gain more power because of the stock limiting excessive air flow thus allowing the computer to compensate and not pouring in as much fuel. BUT i plan on getting the TS ecu flash which shoud solve my running rich problem. and might see gains from the headers.

 

i found this thread basically similar mods as me the onlything he is on the stock plenum but he does a before technosquare flash and after ts flash. and saw a 22rwhp increase and 18lb tq increase.

https://my350z.com/forum/attachment....chmentid=72376

 

Yeah, that makes sense to me. Get the ECU asap and see if the #'s jump...because right now I don't think the headers are helping at all.

I'm curious to see what sort of gains you get. I also would like to see what sort of gains I would get if I reflash mine as well...might not be much at all.

 

The SAFC II will show a knock with all default settings because it is continiually monitoring the noise measured by your knock sensor. You have to train the SAFC II to your specific set up by programming the knock level into the SAFC II at two different RPM ranges. One is a low range and another a mid range. After you program it and it knows how much noise your motor makes under a "no load" condition, it will only show noises that rise above the floor that you set by programming it.