eclipseaudio1530

hey, i was wondering how i would go about turning the boost up on my 87 t2. everthing is stock on my car and it has 66,000 miles on it. is there anyway i could turn the boost from 5.5 psi to around 8 or 9 psi? and if i did, would this be safe with the stock fuel injection system and a stock engine? i just want to turn it up cause the car is capable of so much more power. well thanks for the help guys

j9fd3s

the stock fuel system is ok for about 10psi, but you need a few things to get to 10psi, like an exhaust and a fuel cut defensor.



the stock ecu has a fuel cut at about 7-8psi* so you need a fuel cut defensor to go higher



*they kinda vary a bit

slikrx

fuel cut defenders are evil things......dont turn it up at all unless you do something about a tune. rotaries dont like to be run lean.

eclipseaudio1530

well cant i just manually turn it up some how using the wastegate or wastegate actuator? on my friends piston engines it doesnt take much to turn up the boost.

slikrx

you need to fit a bleed valve on the vacuum line on the turbo. there about $5 at any hardware shop.

eclipseaudio1530

what would my boost be raised to with a bleed valve installed? and is it safe? cause if it is i am gettin one first thing in the morning and installing it!!!!

Lionheart240

on my car, the stock boost was also set at 4-5psi.



I bought a valve from Lowes for $8.00 and spliced it between 2 houses. 1 hose connects to the compressor housing of the turbo, and the other connects to the wastegate. Splice the valve in between.



The tigher you turn the ****, the more you boost you will gain. Note however, that you won't actually notice any change until the **** itself is almost completely turned tight. On mine, I have it turned all the way tight, and I run 10psi in 1st and 2nd gear. Then in 3rd, 4th, and 5th, I am at 12psi.



I however have all the other necessary mods to do this safely. Be sure to get a fuel-cut defender ($50 or so, wow) at the very least to keep from blowing your motor.



Hope this helps.