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oLemurs
12-03-2017, 06:05 PM
So i am having this issue with my sr20 where it only makes around 1 or 2 pounds of boost at around 4000 rpm and i was wondering if its because i have a boost leak. ill link the video im also curious if a boost leak would have the same effect as a vacuum leak meaning it sounds cammed when the engine is warm
https://youtu.be/hLVBrDx3DwU
e1_griego
12-03-2017, 06:23 PM
Your boost gauge is hooked up pre-throttle body so you should change that so you can get a vacuum reading with the throttle plate closed.

Your car isn't going to make boost just free-revving.
unicoder
12-03-2017, 07:09 PM
You are only running about 10inHg on vaccum, should be more like 20-22. I would definitely say you have a boost leak.

- you arent going to make any boost sitting idle, gotta drive it to do that.
- Is your MAF setup draw through or blowthrough?
- are you familiar with how to do a boost leak test?
oLemurs
12-03-2017, 08:54 PM
You are only running about 10inHg on vaccum, should be more like 20-22. I would definitely say you have a boost leak.

- you arent going to make any boost sitting idle, gotta drive it to do that.
- Is your MAF setup draw through or blowthrough?
- are you familiar with how to do a boost leak test?

im not sure if it is draw thgough or blow through, but here is what the intake looks like. i do not have the supplies to do a boost leak test yet but i should probably buy them
https://imgur.com/gallery/Zg2Y5
oLemurs
12-03-2017, 09:11 PM
Your boost gauge is hooked up pre-throttle body so you should change that so you can get a vacuum reading with the throttle plate closed.

Your car isn't going to make boost just free-revving.

i hooked it up to where the egr was, also thanks for letting me know it wont make boost out of gear
unicoder
12-03-2017, 09:50 PM
im not sure if it is draw thgough or blow through, but here is what the intake looks like. i do not have the supplies to do a boost leak test yet but i should probably buy them
https://imgur.com/gallery/Zg2Y5

It's draw through, since your MAF is before the turbo.

Always start with the boost leak test, it will save you hours of headaches
oLemurs
12-03-2017, 10:37 PM
It's draw through, since your MAF is before the turbo.

Always start with the boost leak test, it will save you hours of headaches

got it, just ordered a bunch of stuff for the test
cotbu
12-05-2017, 05:47 AM
No boost with no load unless you have launch control / antilag

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