Help tune Kamotors turbo E30

[LowR3V'in]

Dump that bov asap.
I would just tune it in 3/4th gear and compromise.

Or get megasquirt :P

[Lurker27]

Then you can drive around while VEAL does every single thing for you and massages your aching shoulders

[ak-]

Its a problem, but not a big enough one to cause drivability issues. It honestly drives just fine for cruising around and doesnt buck or stall between shifts at WOT. My BOV has nothing to do with my first gear rich issue.

Running a draw-thru setup and having the BOV vent to atmosphere does in fact cause driveabilty issues. You're confusing the ECU.

By running the MAF pre-turbo, it's expecting the vented air to be reciculated back into the system. ECU will be spitting the wrong amount of fuel into the cylinders if you vent atmosphere since the air going has already been metered.

Just recirculate it and see what happens. Maybe it's a minimal difference?

[kamotors]

An atmosphere bov will only cause rich spikes when it's venting not when it is 100% closed.im not having issues between shifts the most it dips to is 10 afr. I will simply make a 3rd gear road tune tomorrow and just deal with the first gear rich spike. I was bov less for a month and drivability is better with the bov on. The 50mm bov is closed 100% until I lift off above 6 psi,then it opens up.its not like im Venting a bpv to atmosphere which will be open at idle.

[TurboJake]

KAMOTORS, the bosch MAF can be set up blow through.... I'd recommend setting it up that way anyways. The system shouldn't be having it boost higher in higher gears, as load is still going to be relatively static (Yes, it isn't 100% static, but there's a lot of variables). The real thing behind the problem is the turbo simply doesn't have enough time to spool fully in first gear if your running a short differential.

So, what differential are you running?

and AK-, it will only cause an issue when after it has vented metered air. Since the venting only happens when the throttle plate is partially or totally closed, it won't be a driveability issue when WOT.

Running it draw through and venting to atmosphere, will not cause a 1st gear rich mixture issue.

[kamotors]

I was blow through for the first few weeks but the miller setup needs to be draw through. I know the longer gearing will spool the turbo quicker but even when my first gear went 42mph I still had the stutter in first. My boost is usually at exactly 9.5psi all the way to redline in every other gear but first. My Subaru is the same way it can only get 14psi in first but does 19 in the other gears. I'm not the only boosted war user having this issue.

[dmjensen]

i had the same problem with my war setup, i went to ms just because i don't want to deal with all the finickiness that the war chip has. no offense to miller at all, its a great product.

but what i noticed is that if you replace your fuel filter/pump/fpr you will have ALOT less problems with the fuel issues. I'd try that and see if that helps your issues

[kamotors]

so I did 30 miles today and got a good 3rd gear tune, runs great in every gear but first.

[brody]

what are your AFR's on WOT in 3rd gear? You are right it will be a bit richer in first, but when tuning these cars with turbos its a compromise between not rich enough in the higher gear areas vs. to rich in the lower gears WOT. You have to find a happy medium. It can be 12.2:1 in 3rd and 11:1 in first and run great throughout! Just keep tweeking it till you find the happy middle ground!

[kamotors]

what are your AFR's on WOT in 3rd gear? You are right it will be a bit richer in first, but when tuning these cars with turbos its a compromise between not rich enough in the higher gear areas vs. to rich in the lower gears WOT. You have to find a happy medium. It can be 12.2:1 in 3rd and 11:1 in first and run great throughout! Just keep tweeking it till you find the happy middle ground!

Its around 11.8-12.1 through the RPM range in 3rd and feels excellent. Sadly first is around 9.9-10 AFR, but I guess its a compromise I can live with, honestly first is not used that often.

[kamotors]

ok made an even smoother version.

car runs great in 3rd. I tried raising my idle to 1000rpms in the WAR program but its still around 800rpms for some reason. Any reason why my idle rpm wont adjust?

[kamotors]

forgot to mention that cars gets a CEL after it hits the first gear stutter. The CEL will stay on until I unhook the battery.

[brody]

ok made an even smoother version.

car runs great in 3rd. I tried raising my idle to 1000rpms in the WAR program but its still around 800rpms for some reason. Any reason why my idle rpm wont adjust?

You ICV isn't able to manage, make sure it isn't gummed up. What is the CEL for that doesn't go away?

[kamotors]

I've cleaned the ICV a few times and my idle is super stable just not what the WAR chip says its at, so I guess it could be dirty.

I was told to cut the WOT wire on the TPS for the turbo tune and now the stomp test doesn't work.

[kamotors]

so I've discovered the car will stall anytime I go to a stop if I don't blip the throttle, I can simply put the clutch in while cruising at around 2.5krpms at almost exactly 14.7AFR and the car will simply shut off. Never noticed this before because it was an automatic but now its a 5 speed. Its really annoying, its not an issue during spirited driving. If I rev it too fast in neutral it will also be on the merge of stalling as the RPMS drop but it usually catches its self. I just cleaned the ICV today.