I have a strait T3 garret turbo on my jdm D15 that was running about 5 psi with no intercooler just straight from turbo to im, and today i put in an intercooler and know my boost gauge is reading 1 psi with no spiking. is that caused by pressure drop from the intercooler or is it a simple boost leak. i already double checked the couplings to see if there tight, but every body says that if you have a boost leak it will spike erratically and loos boost, but mine only goes up to 1 psi, and i hear that intercoolers drop the psi to you im but is 4 psi normal for a lost

 

should only drop 2psi at the most. i would suggest double checking for leaks. What's boost gauge read at idle?

 

at idle boost is at - 20-30 vacuum, i have my wastegate geting presure from a nipple on the turbo should i close that nipple and get it reading from the im?

 

when you guys have gotten leaks does it stay at a certain psi or does it spike erratically? help me out guys

 

this sucks ive been up all night trying to fix this but i cant find my boost leak

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h kid &raquo;</TD></TR><TR><TD CLASS="quote">at idle boost is at - 20-30 vacuum, i have my wastegate geting presure from a nipple on the turbo should i close that nipple and get it reading from the im?</TD></TR></TABLE>

No that should be fine, i was getting pressure from turbo too for wastegate.. but it was an internal wastegate.

I never had a problem with leaks, but i was told that if you did have one.. then you're VAC would be higher meaning closer to zero.

20-30 VAC is a big range. Should be exactly somewhere, not a range unless you're running AC or something.

You could be running too big of an intercooler and you have too much pressure drop.

 

so should i close the nipple on the turbo and run a vacume line from the intake manifold so it reads the psi after the intercooler. has anybody ever have something happen like this?

 

one pound of boost is not that fun come on ppl give me any advice

 

turn the boost up??

 

Does the size of IC mathers?

 

what size is your intercooler?

 

yes put the reference port after the IC and it will run the amount of boost the spring in the wastegate is set to

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1.7turbo &raquo;</TD></TR><TR><TD CLASS="quote">what size is your intercooler?</TD></TR></TABLE>
it covers the whole front grill, the black part in the middle

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by N20civicB18 &raquo;</TD></TR><TR><TD CLASS="quote">yes put the reference port after the IC and it will run the amount of boost the spring in the wastegate is set to</TD></TR></TABLE>
yea i just disconected the waste gate and covered the nipple on the turbo and went for a test run and it went all the way up to 10-11 punds and i let of so theres the prob before the intercooler it reads 5.5 psi and after it it reads 1 psi thanks for all the help i never thought i would loose that many pounds because of an intercooler, anybody know why that happens, isnt colder air more dense?

 

Pressure test your intercooler. It could be leaking boost also.

 

been pressure tested