Rough Idling Etc On R33

[MR 33]

Hey all, recently put a stainless intake on my car. It has provision for bov return but not for the oil breather. As i have atmo bov, i dodged up the breather line to connect to this bov return. I done this because with just the little breather filter on top of the motor the car would stall and struggle to idle after given a rev or gear change etc. So yeah i dodged it up, plugged in the little boost line off stock ebc and the problem persists. I even tried blocking off my bov to cancel that out but still happening. It is driving me crazy. Any suggestions would be much appreciated, or if anyones around the area come help me! lol thanks guys....

[MR 33]

Come on everyones so quick to bag out others but can't help me? Has to be a simple fix that i just need to be pointed out to me. Really doing my head in as to why i just change intake pipe now it runs like shit.....

[QWK32]

seems like your on the right track by looking for vacuum leaks. by "i dodged up the breather line to connect to this bov return" how dodgy do you mean? also have you checked the afm is plugged back in and properly.

[Elliotws]

hey mate i had a similar problem before i upgraded my turbo. the idle was rougher than it should have been and the car would stall if i took to long to shift gears. when i got the car back there were two problems that it could have been. i needed a new oxygen sensor(could that be your problem?) and my manifold had four broken studs that needed replacing and redrilling. gaskets were replaced also. sorry i cant give you a definite answer id only be guessing, but i hope that helps you out.

[MR 33]

Not really dodgy just two bits of hose joined together to connect the two as breather and bov return are different sizes. Yep afm is plugged back in. I just don't understand what happened. Might be sensor but car was fine before i swapped the pipes? I did actually notice a loose washer on the exhaust manifold but doesn't seem to be a problem as must've been like that for a while lol. Bloody frustrating.....Thanks for the replies guys...

[axe s]

Is it all over the place or hunting (going up and down slowish)

If it's hunting give the ACC a clean out (just search, their is a pretty good TUT on this)

[MR 33]

Nah not really, idles fine. Only when i give it a decent rev or gear change it drops to like 3-400rpm and stuffs around trying to get back to idle then idles fine again. I'm about to go over my cooler pipes to cancel any leaks there out, maybe i was being to violent when changing pipes and knocked one a bit loose. Really doing my head in over this one.......

[The Mafia]

Hey all, recently put a stainless intake on my car. It has provision for bov return but not for the oil breather. As i have atmo bov, i dodged up the breather line to connect to this bov return. I done this because with just the little breather filter on top of the motor the car would stall and struggle to idle after given a rev or gear change etc. So yeah i dodged it up, plugged in the little boost line off stock ebc and the problem persists. I even tried blocking off my bov to cancel that out but still happening. It is driving me crazy. Any suggestions would be much appreciated, or if anyones around the area come help me! lol thanks guys....

I've highlighted your problem.

Do a f**king search!

AFM cars RUN LIKE SHIT WITH A ATMO BOV

Edited September 21, 2007 by The Mafia

[MR 33]

Mate, are you a f**kin idiot or what? Have a read of my first post you clown. I even took the bov off altogether to no avail. So next time you wanna make a dick of yourself, think first. Any one else with some actual intelligent information? I'm in the process now of re-installing the stock pipe to see what happens.

[MR 33]

Well i just put the stock intake back on without ANY hose clamps and its back to normal. Gave it some big revs, goes back to idle normally. What could this pipe be doing to cause the problem??? Anyone in this area wanna come have a look i'd really appreciate it.

I suggest you keep you're little keyboard warrior fingers still next time someone wants some help with their car 'mafia' as you're 'advice' is some just plain f**ken useless.

[Fry_33]

Do you have any pics of your setup and pipe to post up. I know that's not a fix for you but someone may spot something out of place, and as they say a pictures worth a thousand words

[MR 33]

Hrm yeah i think thats the only option i have really. Though you can't exactly see much with everything in place. Sorry if i came off a bit strong before, i was (and still am) very frustrated with my car and didn't need to read a dumb arse post like that above. I just can't understand why it runs like shit after revs etc, and also the 'flutter' is alot quiter for some strange reason? Boost remains the same but the flutter is less. It has to be coming out somewhere else besides the filter but i can't work it out. Thanks again guys...

[Fry_33]

Have you looked at the basics yet like plugs, clean air filter and fuel filter etc. Set the idle according to one of the threads on the forums somewhere to the correct rpm and making sure the base timing is set right. If that is all in order and the AAC is clean and your O2 Sensor is ok then other things left are things like leaks on the inlet and exhaust side. Exhaust gasket leaks are pretty comon on R33's as the turbo and manifold aren't supported and most cars have a dead manifold bolt or two (or more). These would affect the idle as well.

I know you've probably thought of most of this I'm just thinking out loud.

[MR 33]

Hrm well i do have one dud bolt at the back on exhaust manifold, but why does just changing intake cause this proboem to raise its ugly little head? Car runs like normal now with stock pipe back on. I want the nice looks and louder noise but can't sort this shit out! lol I noticed mucking around with the oil breather pipe made a difference but i sealed it up tight back into the intake and still ran like shit. It's such a head f**k, something so simple thats had me going for 2 days now.

[Fry_33]

It is hard to fully understand what hoses you have going where from the descriptions given. If you show how you've hooked things up via photos or pics then someone may notice something that you will miss after looking at it for some time. A fresh set of eyes so to speak.

It must be to do with the re-routing of the hoses etc as you say this is all that has changed. I just had a thought, is your standard inlet pipe fully intact, ie no leaks etc? Maybe there has been a compensation to help it to idle and when an intact inlet is placed a problem arises. Weird I know, just putting it out there.