bennyhonda7

d15b7 running uberdata, 14b turbo, highflow cat, tanabe catback exhaust,dsm450ccs. I am still getting a map cel code. How do i install check valves and where i have tried searching. Also another problem....when im building boost the turbo is heard spooling and then the greddy type s blow off valve putters, like not PSSSSSSST! LIKE PST....PST....PSSSST..... FEEL THE ENGINE BOG DOWN TOO LIKE AROUND 4000 RPM but once it idles for a while it is fine..."sometimes" once i cut the car on and let it run in idle for it to warm up it will run very ragged and then even out...it wants to torzue or move under pressure also my boost gauge is run from a line from my bov to my IM with a T adapter...Now my boost gauge reads vaccuum not boost...

beepy

1) You should not get a CEL with Uberdata unless you haven't programmed it right. You do not need check valves.

2) The BOV is likely not hooked up to the manifold as it should be. Sounds like it is blowing off because it does not have a boost reference on its high side, so the boost in the charge pipe is blowing it open. Connect it to a line coming from the intake manifold.

3) Same problem with the boost gauge. Since you have it teed off from the improperly routed BOV line then it too will not work. Sounds like it is seeing vaccum but not boost? Do you have it hooked up to the PCV valve or the brake booster check valve? Run it directly from the intaker manifold!

Come to think of it, all three problems are likely related. Make sure you are taking your boost/vaccum reference from the intake manifold. Check that and then come back.