1990 Supra Turbo

916MKIIIx2 · 01-24-2010, 09:24 PM

-4 to 0 is common when cruising but at about half peddle on accel you should be getting a decent amount of boost, even cruising at 80 if you hit an uphill and have to press the gas slightly harder it should boost to 0-2lbs in my driving experience. Get someone to ride with you in the car and take pictures of the boost gauge and rpm's while you drive it, while you do that make sure to modulate the way you hit the gas as much as possible.
Hmm if you're giving it 3/4th it should be hitting 6.7lbs of boost, check all your hoses and intercooler piping for leaks, specially the vacuum hosing running off the turbo.
Quick easy way to see if your turbo will boost to full potential, go out to the street and floor it to 40 mph boost should reach 6.7 before you hit 40 if not there is something wrong

01-24-2010, 09:24 PM	#4
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	-4 to 0 is common when cruising but at about half peddle on accel you should be getting a decent amount of boost, even cruising at 80 if you hit an uphill and have to press the gas slightly harder it should boost to 0-2lbs in my driving experience. Get someone to ride with you in the car and take pictures of the boost gauge and rpm's while you drive it, while you do that make sure to modulate the way you hit the gas as much as possible. Hmm if you're giving it 3/4th it should be hitting 6.7lbs of boost, check all your hoses and intercooler piping for leaks, specially the vacuum hosing running off the turbo. Quick easy way to see if your turbo will boost to full potential, go out to the street and floor it to 40 mph boost should reach 6.7 before you hit 40 if not there is something wrong Last edited by 916MKIIIx2; 01-24-2010 at 09:27 PM.