Tuners around GTA

Megan370z · 11-30-2010, 07:24 PM

Draper ,
what we have been discussing is APH didnt setup the dyno properly and the result of the gain are slighty affected by this.

you cant compare the graph of those 2 dyno together
because 1 has the correct setting (SG)
and the other 1 has incorrect value (APH)
you can only do an average of the gain with one and check the average gain with the other one ,, you cant just say hey I had 300 hp with his but 260 with the other one.

even that ,, there is no Dyno that read the same
APH is known to read higher than SGM one...
but on this one since the gear ratio isnt correctly set ,
it throw everything off ...

in conclusion ,, IF i was you . I would have 2 choices
either chose to go back to APH or SGM and get a few proper pulls with every tune
and make sure this time that the dyno is set correctly and get tuned on the top end since the tuner didnt rev the engine to redline ,,, he didnt even go into your peak power since he stoped around 6500-6000 rpm .. the 7300 rpm you see on the APH dyno sheet is the result of the incorrect value in the gearing ratio

that way you are looking to see which one is the best one...

look as an example when first I went to SGM for a tuning , yeah I was like you , mixed feeling with the gain , so later on I did some street tuning and being VERY aggressive with the ignition timing and afr ... then I went back to SGM to see 4 different map and see where we can borrow the best of everything ,

put everything together , we managed to get gain everywhere
2 of my street tuned map were having knock , we corrected it and made more power.

Megan370z · 11-30-2010, 07:38 PM

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 · 11-30-2010, 07:42 PM

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 · 11-30-2010, 07:54 PM

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

Megan370z · 11-30-2010, 08:30 PM

just to throw something
here is my first Dyno with my 370z at APH
the car had no mod or tune , 100% stock

the gear ratio is correct
I did 5 pull and those 2 there are the lowest and the highest one
you can see a big difference

Pull # 2 gave the Biggest number and pull #5 gave the lowest one.

always do more than 2 pull to check the accuracy of the tune...

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11-30-2010, 07:24 PM	#1 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 24	Draper , what we have been discussing is APH didnt setup the dyno properly and the result of the gain are slighty affected by this. you cant compare the graph of those 2 dyno together because 1 has the correct setting (SG) and the other 1 has incorrect value (APH) you can only do an average of the gain with one and check the average gain with the other one ,, you cant just say hey I had 300 hp with his but 260 with the other one. even that ,, there is no Dyno that read the same APH is known to read higher than SGM one... but on this one since the gear ratio isnt correctly set , it throw everything off ... in conclusion ,, IF i was you . I would have 2 choices either chose to go back to APH or SGM and get a few proper pulls with every tune and make sure this time that the dyno is set correctly and get tuned on the top end since the tuner didnt rev the engine to redline ,,, he didnt even go into your peak power since he stoped around 6500-6000 rpm .. the 7300 rpm you see on the APH dyno sheet is the result of the incorrect value in the gearing ratio that way you are looking to see which one is the best one... look as an example when first I went to SGM for a tuning , yeah I was like you , mixed feeling with the gain , so later on I did some street tuning and being VERY aggressive with the ignition timing and afr ... then I went back to SGM to see 4 different map and see where we can borrow the best of everything , put everything together , we managed to get gain everywhere 2 of my street tuned map were having knock , we corrected it and made more power.

11-30-2010, 07:38 PM	#2 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 24	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

11-30-2010, 07:42 PM	#3 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 24	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$

11-30-2010, 07:54 PM	#4 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 24	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

11-30-2010, 08:30 PM	#5 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 24	just to throw something here is my first Dyno with my 370z at APH the car had no mod or tune , 100% stock the gear ratio is correct I did 5 pull and those 2 there are the lowest and the highest one you can see a big difference Pull # 2 gave the Biggest number and pull #5 gave the lowest one. always do more than 2 pull to check the accuracy of the tune...