I just got a supra turbo i need help please!!!

916MKIIIx2 · 01-15-2010, 12:44 AM

If you run the vacuum hose correctly the air flow sensor will pick up the air flow changes and there should be no stutter from the engine when letting off the gas from hard accel, learned from doing it wrong the first time ;p

cre · 01-15-2010, 01:00 AM

Quote:

Originally Posted by 916MKIIIx2

If you run the vacuum hose correctly the air flow sensor will pick up the air flow changes and there should be no stutter from the engine when letting off the gas from hard accel, learned from doing it wrong the first time ;p

WTF? You've just DUMPED a large quantity of air. The 7M doesn't use any sort of meter which can see this loss... thus many people experience problems. And vacuum has nothing to do with it at all... Interestingly some people just see heavy richness and some occasional backfiring (postignition). If you have a fuel controller this can usually be compensated for.

916MKIIIx2 · 01-15-2010, 01:05 AM

Thus he got me, lol all I know is I only ever felt a stutter once that was the first time I installed my apexi blow off valve mechanic told me I had it on wrong moved a few hoses and bam it ran perfectly!

cre · 01-15-2010, 02:05 AM

Quite simply: Overly rich = bad. The goal is NOT to run overly rich when you shift... it causes a big power loss when you finish shifting and get back on the throttle. Personally, performance is more important to me than some cute little whistle.

Some people compromise by installing a BOV AND keeping the stock BPV. This cut's the over rich condition down quite a bit as not all air is being dumped. There's still a loss though.

Anyway, if your car isn't stalling and you're not worried about squeezing every last bit of power out then go with it.... just pointing out that you may experience issues. And if you are looking to squeeze out every last bit of power then you really need to look into a fuel control system anyway (most of which will let you tune out the over rich issue).

01-15-2010, 02:05 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Quite simply: Overly rich = bad. The goal is NOT to run overly rich when you shift... it causes a big power loss when you finish shifting and get back on the throttle. Personally, performance is more important to me than some cute little whistle. Some people compromise by installing a BOV AND keeping the stock BPV. This cut's the over rich condition down quite a bit as not all air is being dumped. There's still a loss though. Anyway, if your car isn't stalling and you're not worried about squeezing every last bit of power out then go with it.... just pointing out that you may experience issues. And if you are looking to squeeze out every last bit of power then you really need to look into a fuel control system anyway (most of which will let you tune out the over rich issue). __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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01-15-2010, 12:44 AM	#1
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	If you run the vacuum hose correctly the air flow sensor will pick up the air flow changes and there should be no stutter from the engine when letting off the gas from hard accel, learned from doing it wrong the first time ;p

01-15-2010, 01:05 AM	#3
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	Thus he got me, lol all I know is I only ever felt a stutter once that was the first time I installed my apexi blow off valve mechanic told me I had it on wrong moved a few hoses and bam it ran perfectly!