Leaning out under load

james089 · 06-09-2010, 01:36 AM

the car seems to have good air/fuel when its idelling, but under load it leans out to around 16. Just installed a new aeromotive FPR, but the car still leans out. Any ideas? fuel pressure is set to 55psi. Help!

turbonicsperformance · 06-09-2010, 03:12 AM

Quote:

Originally Posted by james089

the car seems to have good air/fuel when its idelling, but under load it leans out to around 16. Just installed a new aeromotive FPR, but the car still leans out. Any ideas? fuel pressure is set to 55psi. Help!

few questions are you turbo? if so what mods do you have done? also what wideband are you getting your numbers from some of them have a adjustment it may be off. but if you are turbo and your going to 16 on a fully functioning uego then DO NOT drive until this is fixed you'll end up causing major damage

james089 · 06-09-2010, 10:56 AM

7mgte engine. The mods concerning this problem are, walbro 255 fuel pump, 550cc injectors, Aeromotive FPR, Innovate wideband air/fuel meter, and i'm running a mega squirt system. I don't drive the car because i just finished rebuilding the engine. What would be a good fuel pressure to set it at? stock is 47, no?

Green7mgte · 06-09-2010, 12:22 PM

you shouldnt be leaning out with 550 injectors. whats the FPR suposto be set for those.. if you have larger injectors and a mega squirt set at stock FP. no wounder your leaning out.. sounds like you need to re-tune your mega squirter tabels

turbonicsperformance · 06-09-2010, 01:22 PM

Quote:

Originally Posted by james089

7mgte engine. The mods concerning this problem are, walbro 255 fuel pump, 550cc injectors, Aeromotive FPR, Innovate wideband air/fuel meter, and i'm running a mega squirt system. I don't drive the car because i just finished rebuilding the engine. What would be a good fuel pressure to set it at? stock is 47, no?

the innovative uego has a calibration procedure did you go through this procedure correctly? google it we install these all the time and when someone unhooks their battery or something they come in and complain that their car running rich/lean and we have to re-calibrate the gauge

james089 · 06-10-2010, 01:14 AM

I'm gonna try to recalibrate the wideband tomorrow morning, we'll see how that works. I'll also up the fuel pressure to just over 55psi.

06-09-2010, 01:36 AM	#1
james089 Stock Join Date: Apr 2010 Location: Montreal Posts: 5	Leaning out under load the car seems to have good air/fuel when its idelling, but under load it leans out to around 16. Just installed a new aeromotive FPR, but the car still leans out. Any ideas? fuel pressure is set to 55psi. Help!

06-09-2010, 12:22 PM	#4
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	you shouldnt be leaning out with 550 injectors. whats the FPR suposto be set for those.. if you have larger injectors and a mega squirt set at stock FP. no wounder your leaning out.. sounds like you need to re-tune your mega squirter tabels __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Lopeing under load	batmmannn	MKIII Supra	14	06-10-2010 06:26 AM
vibrations under load	mike_j_2me	MKIII Supra	3	11-16-2007 05:21 PM
stalling under load	marxdenning	Non-Generation Specific Questions	1	01-18-2007 09:51 PM

06-09-2010, 10:56 AM	#3
james089 Stock Join Date: Apr 2010 Location: Montreal Posts: 5	7mgte engine. The mods concerning this problem are, walbro 255 fuel pump, 550cc injectors, Aeromotive FPR, Innovate wideband air/fuel meter, and i'm running a mega squirt system. I don't drive the car because i just finished rebuilding the engine. What would be a good fuel pressure to set it at? stock is 47, no?

06-10-2010, 01:14 AM	#6
james089 Stock Join Date: Apr 2010 Location: Montreal Posts: 5	I'm gonna try to recalibrate the wideband tomorrow morning, we'll see how that works. I'll also up the fuel pressure to just over 55psi.