OfficerFarva

Ok, so maybe u can help me out here Tim. When I loaded ur map, and I know the injectors from the factory vary like 15% so one tune w/ E-manage is not a universal tune, what should I do about idle then?? Not adjust it at all? Cus like I said, it was idleing lean. Now I have it at 13.8 or so, given it does vary sum. Should I just let the PCM and the P1's do what they would normally do and don't mess with it in closed loop at idle? Would I risk it trying to go way lean once again??

OfficerFarva

Ok, so I went ahead and took away all of the fuel I had added. The car idles smoother now, it's just strange b/c it still seems lean to me. I guess it's doing whatever it likes to do, so as long as it's a smoother idle it's cool. JW Maddog, what's ur afr at idle?

MadDog

When idleing in closed loop its very near stoich. There's nothing wrong with lean idle. Its only when making serious power (under boost) that you need to worry about it. For example, with the IntX some people are leaning cruise to AFR near 16-17 to improve mileage.

OfficerFarva

I know, but I have a prob w/ the A/C on. I feel like maybe since it's lean and when the A/C kicks on it's just too much of a load. The car won't typically stall w/ the A/C on, but just a noticeably rougher idle. Any1 else w/ the E-manage have any issues w/ the A/C?

MadDog

Hell, you didn't have issues with rough idle when you were *stock*?

OfficerFarva

LOL. A little, but to be honest I dont have a good enough recolection to compare. I was stock way back in the day!

SUPERMAC

Hey guys. Ive just got done turbocharging my 8 and am having the same problems. I have designed a kit similar to the ptp kit see in the last issue of car and driver. i know the kit is good and everything is hooked up properly. Im running a 50 trim t3/t4 turbo with a 38mm wastegate (spring controlled at 4-5 psi) and a rfl bov (open). no boost controller, no fuel upgrades, no emanage... nothing else. and ive placed the mas on the intake side of the turbo rather than the pressure side (similar to the greddy setup).

the problem is that the car seems to idle just fine... almost stock even, however as soon as i try to drive it, it will stall out on me. even if i clutch from as low as 2k rpm. its really annoying cause i literally cant drive the car around town.

i have checked everything i can think of for leaks and such and everything is fine and dandy. im thining its all a tuning issue, and that i really need an emange. however i would have figured that with low boost and not any heavy driving i would of at least been able to drive the car around.

Anyway im in need of a solution from someone that has experience and not just theories. Even teh local tuning shops wont take a look at it for me cause tey dont have enough experience with the 8's. its really frustrating me cause i know the kit is designed well... it has to be something electronic thats just no agreeing with my kit. I just dont have any idea what.

Any help would be great.

Thanks,
chris

cjkim

you should just start your own thread.. You'd probably get more help that way.
any followups btw?

rkostolni

Holy **** man, you need some type of fuel control! That may not be your immediate problem, but you're asking for trouble if you're boosting with the stock rx8 AFR's.

MadDog

+1

Sounds like a leak, though. Got and AFR gage? I'd bet rich conditions cause it to stall.

SUPERMAC

well im not actually boostin anything at the moment. i havent driven the car really with the turbo on. i mean i have taken it down the driveway and such (about 400ft.) but i havent boosted it or anything like that. im not in a hurry to ruin my motor. lol

im just wondering what would cause it to stall out like that. i couldnt see it running rich as i havent touched the fuel system. i was thinking it was way too lean to stall out from fuel.

i was thinking it could be the blow off valve. but it isnt building boost or anything so how would that effect it? as long as it stays closed it isnt venting the needed air to prevent it from stalling right? i dunno. im lost at this point... i just need a good tuner to strap in an emanage and make everything work.

chris

MadDog

If you have a leak after the MAF, then there will be too much fuel for the air actually reaching the combustion process. This is a pretty common problem for folks that have a leaky BOV.