fuel cut out question................

[BOOSTEDSUPRA]

ok, i know im not very computer surfing savey, but i cannot find an answer to this looming question i have in my head, so, i will ask and hope i dont get yelled at for double posting. :1zhelp: ok, everyone knows about the fuel cut in their 7m-gte. mines hitting around 13psi. my question.......what is telling the computer to cut the fuel? the mass air, or the sensor for the guage? and my question to that is.....can one just unplug the vacume line going to the little sensor on the driver fender, resulting in the computer not kowing how much boost is being fed through the intake?........theredicly i think it should be possible to do......but heck, i dunno what one the tattle tale sensor is running to momma computer saying to shut it down at a lame low psi! :nono:

 

[jdub]

Fuel cut is based on the volume of air that the AFM senses and transmits to the ECU. The stock boost gauge or it's sensor has nothing to do with it.

 

[sneakypete]

fuel cut is designed to prevent you from damaging your engine. i dont know the answer about unplugging a sensor to avoid it....... but it sounds like a dumb idea. from what i remember, somewhere around 12-14psi on a stock setup mk3 is where you hit fuel cut. there are other ways to get around it. such as a FCD which ive heard is also a bad idea. start by upgrading your fuel system (injectors, pump, afpr), getting a wideband, and get a piggyback fuel computer to tune your car appropriately to handle the increased power. this way you can safely increase boost. i recommend you either do a lot of research before you tune your car on your own, or get it done professionally.
-pete

 

[BOOSTEDSUPRA]

ok, jdub answered it, and now that i think about it, that makes sence, duh. the wideband stuff and mods i got. not the fuel system yet though. this car has been to say the least a mind blowing learning experience, lol. but...all in all i have learned a ton about the car, from tuning the throttle sensor, to timing, to the re wiring EVERY BLOODY THING UNDER THE HOOD!!!! lol, but, body is perfect, interior is good, runs great, spooles perfect....most of the time, lol. all in all, what is the most reliable, but yet not cut yer limbs off expencive way to upgrade this car to oh i dunno 15 to 18psi? ive been lookin at the lex afm replica 550's and fuel pump. but with the experience on this forum, anyone have good ideas?

 

[sneakypete]

ok, jdub answered it, and now that i think about it, that makes sence, duh. the wideband stuff and mods i got. not the fuel system yet though. this car has been to say the least a mind blowing learning experience, lol. but...all in all i have learned a ton about the car, from tuning the throttle sensor, to timing, to the re wiring EVERY BLOODY THING UNDER THE HOOD!!!! lol, but, body is perfect, interior is good, runs great, spooles perfect....most of the time, lol. all in all, what is the most reliable, but yet not cut yer limbs off expencive way to upgrade this car to oh i dunno 15 to 18psi? ive been lookin at the lex afm replica 550's and fuel pump. but with the experience on this forum, anyone have good ideas?

lexafm, 550cc injectors, bigger fuel pump, and afpr are a step in the right direction if you have a fuel computer

 

[Grimsta]

Turlock, thats not too far from Santa Rosa. If you dont mind a little drive, come on up to the shop and we'll take care of your Supra real nice