Boost Drop With Stripes Kit
#1
Boost Drop With Stripes Kit
With the stock greddy kit I was seeing 5psi all the way up to redline. After installing stripes kit it starts to drop around 4500 to only 3psi by 6500. I was thinking for now I could just tee the wastegate to the manifold instead which should fix the problem.
Does anyone know why I get the drop?
Does anyone know why I get the drop?
#2
If you had the stock greddy kit with no intercooler, just installing one will lower your boost, not sure if it will account for a drop that large, when i installed mine i lost about 1-2 psi with the intercooler. Check all your hoses and make sure they are tight the pressure might be creating a little hole at higher boost that is causing it to leak.
#3
I'm Miserable!
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Yep. Ic's usually have a psi drop. Some will cool the air better but lose more boost, some will not lose so much boost but not be efficient in its cooling job. Like if you go to an ebay IC and scroll down, theirs a chart and usually tells you the psi drop and cooling effiencys. I think im right?
#6
I'll check the pipes with soapy water as I do have a bit of a questionable connection where I used a coupling from the stock greddy kit. Boost gauge is hooked up to the manifold directly. And the WG rod has been tightened nicely. I do get a solid 5 psi until i go WOT after 4500-5000ish then starts to drop a bit so I was thinking it wasnt a leak. But I could be wrong.
#18
Yes it will. If the wastegate is set for 5psi without an intercooler, adding the stripes kit doesn't change anything, except give a pressure drop on the other side of the intercooler.....what his boost guage is seeing. Guaranteed, (leaks or no leaks) that he will be running 5psi again if he changes his vac/boost line to the intake mani. If you aren't hooked up this way, I suggest you do......because it also increases your power band. The turbo spools quicker to compensate for the pressure drop and delays the wastegate from opening too soon.
Dedoky: You'll also need a rubber cap to clamp over the turbo vac/boost port where you original "blue" line was for the wastegate.
Last edited by MiataNuTca; 06-18-2007 at 12:50 AM.
#19
Boost Czar
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correct, me have brain fart. Just trying emphazise that a pressure drop will always exist in the pipes.
as far as source line, I've heard vacuum isn't great for wastegates. a MBC will solve the wastegate from opening too soon.
as far as source line, I've heard vacuum isn't great for wastegates. a MBC will solve the wastegate from opening too soon.