injen installed with recurulated now almost stalling

[Quadsportz]

I just purchased a injen intake with recirulated bov. It's all installed with everything tight. If I rev up to 3k rpms in neutral and let off the throttle it will drop to really low Rpm's and almost stall then go back to 750rpms. It will also do this if I'm driving and shift into neutral. I reset the computer with my scan tool and it didn't help. So I put the stock intake back on and it is fine no problem's at all. So I know its something to do with the intake. I'm getting all the symptoms of not having my bov recirulated but I have mine recirulated. I noticed that the injen doesn't have the long tube going into the intake for the bov like the stock intake has. My best guess would be the mas is not picking up the air being blown back into the intake. So its thinking its vented to the atmosphere.

 

[99ECLIPSEGSXDSM]

When you had the injen intake on did you make sure the mas was plugged in all the way?

 

[Quadsportz]

Yes mas was plugged in all the way. My mods are 14psi on t25, stock downpipe with no cat, 3in catback exhaust

 

[eclipsyco]

Does this intake have all 4 nipples/holes? (BOV, canister, boost controller and CV) and if it does make sure all holes are either used or gaped. An intake swap is pretty straight forward it should cause any problem.

 

[Twinturbo120]

Make sure everything is tightly clamped down when you install the injen intake. Make sure the mas is properly plugged in. Not much that can go wrong on an intake install.

 

[Quadsportz]

It has bov tube,pcv,charcoal,bcs there all hooked up. I'm lost with this I'm thinking the mass for some reason is not accounting the air being recirulated for some reason.

 

[TSicktalon]

You're right, it's not accounting for the recirculated air. It's not supposed to. It already counted it once.

Double check and make sure there isn't an extra nipple on the Injen hiding from you somewhere.

 

[Quadsportz]

There's no nipple left unplugged and all clamps are tight. I have a 97 gst with a 95-96 cas so I have my firing order swapped to make it run but I haven't swapped injector pin outs. Could this do anything? I reinstalled the stock intake and it works fine...

 

[TSicktalon]

If the stock intake works fine, there is something different between the two. Figure it out.

 

[Quadsportz]

That's the problem I can't figure it out.

 

[97_4g63t]

There isnt any slits or cracks in the couplers or recirculated hose? Crack in piping? Everything else is hooked up the exact same as with the stock one?

 

[turtlebain]

Did you just swap an intake pipe? Or install a new BOV & intake? If you just did a pipe swap then .. You must have an air leak on that pipe. Either there's an opening where air is escaping or you've connected a hose wrong. Try to change nothing other than the pipe and see what happens.

Alternatively you could have a leak in the BOV valve itself or the gasket mating it to the upper intercooler pipe. If you can pressurize the air inside the intake, spray soapy water onto it and see if it bubbles. See if there is any hissing sounds which would indicate a leak also. In other words that's a boost leak down test, just concentrated in that area. That could act like venting even if you're connected to a recirculating pipe.

 

[Quadsportz]

I'm just swapping the pipe and I already had a k&n cone filter. I have the stock bov, I get what your saying about leaks I've already checked for boost leaks. Plus the problem gets fixed with the stock rubber intake. Could it be getting to much air now and the computer can't compensate for the larger air intake and having no catalytic converter and a 3in catback.

 

[TSicktalon]

So for clarification, the ONLY part being swapped is the cone shaped intake pipe that goes from the back of the MAF to the inlet of the turbo?

 

[Twinturbo120]

I'm just swapping the pipe and I already had a k&n cone filter. I have the stock bov, I get what your saying about leaks I've already checked for boost leaks. Plus the problem gets fixed with the stock rubber intake. Could it be getting to much air now and the computer can't compensate for the larger air intake and having no catalytic converter and a 3in catback.

Nope, I had the same mods and everything was fine. That is weird dude, freaken weird. Is the pipe#cracked or anything? I'm running out of ideas

 

[Quadsportz]

Yes just the injen pipe. I had the stock rubber intake with a k&n cone already

 

[turtlebain]

There has to be something connected incorrectly. Try adjusting BISS screw maybe?

From another forum member: "For everyone who doesn't have link, the general rule is to have it screwed all the way in, and do 2 full turns out. Again, this is a rough estimate, but pretty accurate."

 

[iBoostDSM]

Do you have an aftermarket boost gauge? What's your vacuum at idle? A low vacuum reading would be a good sign of a boost leak with the new pipe on.

 

[Quadsportz]

20 hg at idle

 

[TSiAWD666]

Check if there is an obstruction in the bov inlet on the injen pipe. Older models had assembly problems where the hole cut in the larger pipe overlapped with the inlet pipe itself. Fix was to use a dremel to cut out the overlap. I believe the overlap caused a backwash of air into the maf that disrupted its operation temporarily.

 

[Quadsportz]

I did see where the recirculation tube is welded on to the main piece on the inside had a real ugly weld that was bumped out a little but not to much.

 

[SleepyGST]

Have you found anything else out? I have the same problem on my car with same mods, but im hitting fuel cut. I thought I was crazy for hitting that with only a catback and intake. Maybe our issues have something in common.