Tuners around GTA

Megan370z

Draper ,
those 2 picture you just shown is one of APH and SGM , thats ok

You said in your post when you posted the first time that this one was 1 pull from the base pull and then a pull with the APH tuned one

ofcourse you will have the big gain from the base tune...

and the one on SGM was with Sasha tuned map and your Cobb map which is already tuned from them,,
since you came in his shop with an afr 12,5

from the factory the 370z run lean ,, not rich like that , you even have breather mod and exhaust ,, if you wasn't tuned when you went to SGM ,, you would have been in the 14.x AFR

then the big gain would have shown like APH in his graph

Megan370z

on a side note ..
no I did not bought the M370 from MotorDyne

I bought an used 350z HR intake manifold with both Throttle body for my projet
Since someone showed the picture of their M370 . i took advantage of it and Did the modification myself , I dont see myself buying the same item for 900 $ when I bought it for 100$

Megan370z

aaaa I hate missing stuff
sorry Draper

I do not have what you are asking since the only sheet I have with me is the last one I got the last time I went to SGM and I didnt ask to have the one from the first time he tuned me .

if you add the gain I had the first time and the gain I got the second time
it should average between 5 to 13hp / tq
those are my word and dont put to much weight on it because I go from memory

but I do remember the first time I got in at 268 whp and left at 280 whp (6800rpm) and droping !!! since i do not have a CAI

Im pulling vacuum from 6400 rpm to Redline.. which mean there is a restriction in the OEM Intake system with the freeflow exhaust I have

draper

Megan again, please look at the delta/differences in power i.e. from APH tune to Base
and Sasha to Base.
Regardless of gear ratio or different dynos, it is obvious there seem to be higher numbers (more than 1 - 2% ) throughout the power band and better than Sasha.

I didn't know you went back to Sasha to get a proper tune as you were not happy with the first one, I was in the same boat as you were and had to go to APH to get a proper tune. Sasha didn't want to try again, I gave him other options as well which were fair to both of us but he didn't want to go ahead. So I said 'oh well'.

Brian at APH made sure I didn't have any knock after the tune, and as I mentioned before no CEL/SES light till now which says a lot about the tuner. One usually gets this light if the AFR numbers are off and that throws off other stuff. It happened to me right after i got the tune from Sasha.

May I ask what was the gains you made from first tune to the latest one from Sasha?

draper

Megan, its a smart thing you did about the M370 and this is what some of the ppl were asking about that. Can I ask what you've modified besides the bolt holes? Did you do a before and after tune, just to make sure its worthwhile doing this mod.
Not sure if you can add gains from first tune to second tune as there are other things involved such as temp, gear ratios , etc etc.
I had to ask Sasha multiple times to get me dyno stuff, and he forgot to put the battery cover back in my car after the tune and which I still yet to recieve it.
You don't have too many mods and shouldn't be getting any knocking. Are you doing tune with Cobb or Uprev?
Either one, try getting a tune with APH as you should be paying only for a tune and that shouldn't take more than two hours... my two cents.

Megan370z

You can check my DIY , picture and everything what I did ,
the only part that I did not covered was making the hose setup.
DIY 350zHR Intake Swap

As I said previously , Im going on his dyno next week to test the new manifold against the OEM on the 370z. ofcourse I will not knock since at around 15 degree C I lowered the timing ignition and the AFR is rich enough I should not get a knock

Like I told you by PM weeks ago , I have the Uprev tuner package .
I may go at APH and spend some time there to see what they can do in the future, but right now im focusing on the same Dyno !

2 head is beter than 1 , doesnt mean 1 is better than the other one ,, just things are done differently

draper

thats pretty good numbers for stock. And if I were you, I would do it again, as it is right now and one after tune if you were getting it.

Megan370z

ok well let write you down what im putting down right now with Sasha dyno at 70degree F
** WHP **
3500 rpm = 155 whp
4000 rpm = 182 whp
4500 rpm = 207 whp
5000 rpm = 225 whp
5500 rpm = 247 whp
6000 rpm = 264 whp
6500 rpm = 278 whp (staying flat till red line)
6860 rpm = 281.3 whp *peak power*
7000 rpm = 278 whp
7500 rpm = 276 whp

** WTQ**
3500 rpm = 233 wTq
4000 rpm = 239 wTq
4500 rpm = 242 wTq
5000 rpm = 236 wTq
5500 rpm = 235 wTq
6000 rpm = 231 wTq
6500 rpm = 225 wTq
6860 rpm = 216 wTq
7000 rpm = 209 wTq
7500 rpm = 195 wTq

like I said Im pulling vacuum in the intake manifold @6400rpm to redline which mean when I will have my custom made CAI in January ,there will be quite a bit of gain !

draper

So it was just making the bolt holes fit the vqhr37, I thought it was more than that. This is getting me thinking, hopefully my wife won't find out.
are your running the car with this mod, how does it feel?

Megan370z

again ,, no
I am not running with the 350 manifold because I need to install my Oil catch can first , I will be finishing mine by the time I get on the dyno next week.

the reason for this , is because while swaping the intake manifold , I found quite a lot of oil traped in it .
The effect of Oil has a negative effect of reducing the Octane rating.
This is big on a Forced setup but on my NA project it will not hurt at all !

draper

hmm...I think Sasha can help you with that vacuum issue and making other custom mods. I had an idea to built custom CAI, you get all the parts on eBay (cheapest find), just look for intercooler plumbing and some cone filters and you're set. You would need to get some MAF sensor plumbing but that shouldn't be hard.
But not sure why you're getting oil trapped in your manifold, don't think you've FI as per your dynos.

Megan370z

Ok Sasha is not doing my custom CAI , its going to be Rawtek, those are the guys who did my complete exhaust minus Headers/TP.
you can see my car there (picture and video)
Rawtek Performance Fabrication inc.


I need a specific tubing size and properly mendrel bend for everything. im not using Ebay for the cheap stuff anymore .. look at my oil catch can its leaking everywhere!!


as for the oil in the manifold , you dont need to be FI to get it ... if you beat the engine (track or something similar)
dont forget there is 2 tube that going from the valve cover to the intake
im sure you knew it . the vacum/pressure/ blow-by can get Oil in the intake manifold

draper

ok cool. good luck.

draper

I think this might be the reason why Sasha's tune wouldn't work:
"Regarding the AF graph – we were using the COBB to monitor AFRs, and their data logging does not offer graphs! They were in the 13.2’s to 13.0:1 at peak rpm."

Most tuners use sniffer that is hung to the exhaust or the HFC bung for accurate readings.

Megan370z

this is why the second time I went back there , we used his sniffer because the first time he was logging AFR from Uprev

When I had my Berk HFC my AFR gauge was connected and I saw an average of 0.4 AFR
if Uprev read 13.0 AFR my gauge was reading 13.4
this is one of the reason we were able to get some more gain the second time.