got my turbo kit in finally! - Page 6

some1 · 11-11-2009, 08:28 AM

my black G

G37Sam · 11-11-2009, 11:01 AM

Pushing 357whp? Can you give us more details please?

How many psi? What exhaust? 5AT or 6MT?

kame_sanjo · 11-21-2009, 11:49 PM

ok sorry ive been away so long! havent had time to even drive the car =P

just went to a dyno day today. good and bad news, good power but bad a/f! so need to talk to sam soon about a new tune or possibly bigger pump.

thats at 9.3 psi. so im very satisfied! just need to re-tune.

G37Sam · 11-22-2009, 09:14 AM

Hey whyd you hide the rpm scale lol

kame_sanjo · 11-22-2009, 10:13 AM

there arent any numbers on it. dont know why.

G37Sam · 11-22-2009, 11:23 AM

hahaha sorry then.. no AF numbers either?

kame_sanjo · 11-22-2009, 11:47 AM

sorry haha, the dang numbers are all the way at the bottom. im so used to looking at just the hp/tq. 515hp @ 6500rpm and 451ft/lb @ 4400rpm. and unfortunately the a/f was14.52 to 14.87 all the way through. at a lower boost the numbers are solid though.

DmfG37sTT · 11-24-2009, 09:58 AM

Good job man..for stage one the car makes good power for such a ****ty A/F. give us some goodie pictures of your baby!!

Ivoidwarranties · 12-31-2009, 01:07 PM

Update? Are you happy with the car?

silver g · 01-05-2010, 02:45 PM

Quote:

Originally Posted by kame_sanjo

sorry haha, the dang numbers are all the way at the bottom. im so used to looking at just the hp/tq. 515hp @ 6500rpm and 451ft/lb @ 4400rpm. and unfortunately the a/f was14.52 to 14.87 all the way through. at a lower boost the numbers are solid though.

Your A/F's are in the 14's at WOT!?!? If so you are running dangerously toooooooooooooooooooo lean!!!!! I would not drive that car or get it into boost at all until you get a re-tune. Your A/F's should be somewhere in between the 10-12 range at WOT. I apologize if it has been said but what size injectors are you running?

SAM@GTM · 01-07-2010, 01:44 PM

Let's just pray to God that your AFR reading is wrong. There is no possible way that the engine can survive under boost at 14.7. I just went back and dug up a PM from a few weeks back that you sent me regarding this issue. My specific instructions were to stay out of boost and call me immediately. Before I give you any suggestions regarding fixing the problem, most likely there is a mechanical issue with the fuel system.

If the car is running the proper afr at a lower boost level, that indicates a possible loss of fuel pressure. When modifying the fuel pump assembly housing, it is very important to follow the instructions and drill the regulator orifice with the right size hole and be sure that your o-rings are not leaking. Otherwise, this problem will only appear at a higher fuel system demand. If the car was running lean all the time, it would indicate a possible tuning issue.

There are two things you can do.
1) Install a fuel pressure gauge on the system to verify fuel pressure. In the event that you see a dramatic drop in fuel pressure, or the air fuel ratio going into the 14's, get off the gas!
2) If you don't have access to a fuel pressure gauge, remove the fuel pump assembly and recheck the fuel system modification that you have done.
3) I don't see an air fuel ratio on the dyno graph, so i'm assuming that you are depending on something you have installed in the car. Please verify the air fuel ratio with a properly calibrated wideband.

It is really important for you to remedy this problem...you are playing with fire.

Sam

11-11-2009, 11:01 AM	#77
G37Sam Administrator 2008 Infiniti G37 Trader Score: (0) Join Date: Aug 2008 Location: UAE Posts: 6,635	Pushing 357whp? Can you give us more details please? How many psi? What exhaust? 5AT or 6MT? __________________ '08 AG G37S 5AT \| Fully Loaded \| Tint \| Clear Bra \| FI CF Catback \| PC Rims \| BB's V2 GK \| Eibach Pro Kit \| Painted Grille \| 4x20mm H&R Spacers \| Stillen 3rd Gen Intakes \| FI Non-Res Test Pipes \| Customized Fox Resonators \| FR:245/40 RR:275/35 \| UR Crank Pulley \| PIAA Fogs \| Debadged & Valenced \| Painted Headlights Before you post: - Check out this lovely feature! - Read our Guidelines - Read the forum rules - Learn how to post Getting lost in this place? \| Want to become premier? \| Want to mod but don't know where to start? \| Need specs of OEM wheels? \| Got G? Check In! \| We know what a G looks like, what do you look like? \| Classic post? Post it up

11-21-2009, 11:49 PM	#78
kame_sanjo Registered User 2008 Infiniti G37 Trader Score: (1) Join Date: Aug 2004 Location: Las Vegas, NV Posts: 155	ok sorry ive been away so long! havent had time to even drive the car =P just went to a dyno day today. good and bad news, good power but bad a/f! so need to talk to sam soon about a new tune or possibly bigger pump. thats at 9.3 psi. so im very satisfied! just need to re-tune. __________________ OB 6MT VQ37HRTT - GTM 3" Exhaust - Stillen pulley - F.A.S.T. - Blitz SBC Spec-S

11-22-2009, 09:14 AM	#79
G37Sam Administrator 2008 Infiniti G37 Trader Score: (0) Join Date: Aug 2008 Location: UAE Posts: 6,635	Hey whyd you hide the rpm scale lol __________________ '08 AG G37S 5AT \| Fully Loaded \| Tint \| Clear Bra \| FI CF Catback \| PC Rims \| BB's V2 GK \| Eibach Pro Kit \| Painted Grille \| 4x20mm H&R Spacers \| Stillen 3rd Gen Intakes \| FI Non-Res Test Pipes \| Customized Fox Resonators \| FR:245/40 RR:275/35 \| UR Crank Pulley \| PIAA Fogs \| Debadged & Valenced \| Painted Headlights Before you post: - Check out this lovely feature! - Read our Guidelines - Read the forum rules - Learn how to post Getting lost in this place? \| Want to become premier? \| Want to mod but don't know where to start? \| Need specs of OEM wheels? \| Got G? Check In! \| We know what a G looks like, what do you look like? \| Classic post? Post it up

11-22-2009, 10:13 AM	#80
kame_sanjo Registered User 2008 Infiniti G37 Trader Score: (1) Join Date: Aug 2004 Location: Las Vegas, NV Posts: 155	there arent any numbers on it. dont know why. __________________ OB 6MT VQ37HRTT - GTM 3" Exhaust - Stillen pulley - F.A.S.T. - Blitz SBC Spec-S

11-22-2009, 11:23 AM	#81
G37Sam Administrator 2008 Infiniti G37 Trader Score: (0) Join Date: Aug 2008 Location: UAE Posts: 6,635	hahaha sorry then.. no AF numbers either? __________________ '08 AG G37S 5AT \| Fully Loaded \| Tint \| Clear Bra \| FI CF Catback \| PC Rims \| BB's V2 GK \| Eibach Pro Kit \| Painted Grille \| 4x20mm H&R Spacers \| Stillen 3rd Gen Intakes \| FI Non-Res Test Pipes \| Customized Fox Resonators \| FR:245/40 RR:275/35 \| UR Crank Pulley \| PIAA Fogs \| Debadged & Valenced \| Painted Headlights Before you post: - Check out this lovely feature! - Read our Guidelines - Read the forum rules - Learn how to post Getting lost in this place? \| Want to become premier? \| Want to mod but don't know where to start? \| Need specs of OEM wheels? \| Got G? Check In! \| We know what a G looks like, what do you look like? \| Classic post? Post it up

11-11-2009, 08:28 AM	#76
some1 Registered User Trader Score: (0) Join Date: Apr 2009 Posts: 3	my black G

11-22-2009, 11:47 AM	#82
kame_sanjo Registered User 2008 Infiniti G37 Trader Score: (1) Join Date: Aug 2004 Location: Las Vegas, NV Posts: 155	sorry haha, the dang numbers are all the way at the bottom. im so used to looking at just the hp/tq. 515hp @ 6500rpm and 451ft/lb @ 4400rpm. and unfortunately the a/f was14.52 to 14.87 all the way through. at a lower boost the numbers are solid though. __________________ OB 6MT VQ37HRTT - GTM 3" Exhaust - Stillen pulley - F.A.S.T. - Blitz SBC Spec-S

11-24-2009, 09:58 AM	#83
DmfG37sTT STL's Finest Trader Score: (0) Join Date: Aug 2009 Location: Saint charles, Missouri Posts: 101	Good job man..for stage one the car makes good power for such a ****ty A/F. give us some goodie pictures of your baby!! __________________ 2008 G37S Coupe, 6MT, 2% Tint

12-31-2009, 01:07 PM	#84
Ivoidwarranties It's HER car. 2008 Infiniti G37 Trader Score: (3) Join Date: Nov 2008 Location: Omaha Posts: 1,483	Update? Are you happy with the car?

01-07-2010, 01:44 PM	#86
SAM@GTM MYG37.COM Sponsor Trader Score: (1) Join Date: Sep 2006 Posts: 118	Let's just pray to God that your AFR reading is wrong. There is no possible way that the engine can survive under boost at 14.7. I just went back and dug up a PM from a few weeks back that you sent me regarding this issue. My specific instructions were to stay out of boost and call me immediately. Before I give you any suggestions regarding fixing the problem, most likely there is a mechanical issue with the fuel system. If the car is running the proper afr at a lower boost level, that indicates a possible loss of fuel pressure. When modifying the fuel pump assembly housing, it is very important to follow the instructions and drill the regulator orifice with the right size hole and be sure that your o-rings are not leaking. Otherwise, this problem will only appear at a higher fuel system demand. If the car was running lean all the time, it would indicate a possible tuning issue. There are two things you can do. 1) Install a fuel pressure gauge on the system to verify fuel pressure. In the event that you see a dramatic drop in fuel pressure, or the air fuel ratio going into the 14's, get off the gas! 2) If you don't have access to a fuel pressure gauge, remove the fuel pump assembly and recheck the fuel system modification that you have done. 3) I don't see an air fuel ratio on the dyno graph, so i'm assuming that you are depending on something you have installed in the car. Please verify the air fuel ratio with a properly calibrated wideband. It is really important for you to remedy this problem...you are playing with fire. Sam __________________

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