IAP KIT - running - need some help!!

[ChicagoS14T]

So I finally took the car out for a few runs around with a boost gauge hooked up and the bov hooked up to the right place (FPR) and I noticed a few issues im having. The car is a 95 5spd. The IAP kit comes with a Walbro and the Greddy RS recirc. bov. The only thing I am using as far as tunning for now is a SAFCII. Now the first issue were having is that the BOV seems to open but the compressor sounds like its surging. THis I think can be solved by messing around with the screw on top (softer or harder).

However.... the real issue is that the car keeps stalling if you hit the gas, spool the turbo and then come off the gas and it reaches low rpms, like when Im driving it from the beginning of a block to the end and stop at a stop sign and put the car into neutral and brake the car will stall. Is this a tunning issue??? Im running stock injectors and the walbro but we sorta increased some of the fuel at higher rpms to give it some extra fuel as to not let it be lean. I will tune the car asap but are waiting until I decide whether to use 370cc's I have off a SR or upgrade to 550cc's and then will drop it off most likely at AMS since its in my area (Chicagoland).

The last issue I would ask for is help with the Boost Gauge... its an autometer (yeah I hear they have issues) Its showing 5psi max. So either my wastegate was sent from IAP with a 5 psi spring, or the boost gauge is not showing the 2psi... could it be anything else??? I read in some posts that autometers tend to suck and it could be their **** quality doing this... but I am a noob. Vaccum on the gauge shows a nice 20 ish... Any help would be greatly appreciated... PS I have read the sticky on the SAFCII tunning.

Setup:95 KA 5spdIAP Kit:T3/TO4e .60A/R Compressor (Garrett GT)Tial 38mmFMIC2.5 inch DPMegan Racing flex pipe (downpipe)Nissan Fake Cat3 inch Megan Racing Exhaust.:: Running no cats ::Walbro 255 lph hi flow----- non IAP --------Autometer Phantom series gaugeAPEXI SAFCIIstock injectors (sr370cc injectors in garage)

THANKS AGAIN FOR ANY HELP!!!

P.S. My car when warm idles at about 730 - sometimes higher.... was like this before turbo....

[sunnys14]

the reason why u stall when u let off the gas and throw to neutral is because the BOV is vented. when a BOV is not recirculated, it vents off unmetered air when u let off the gas which leaves you in a rich condition which makes you stall. its easy as that. safc2 has a decl function in which can help you not stall when approaching stops.

if your autometer gauge is showing about 20 vacuum, then that should be normal. i dont think the gauge is broken. check your spring again.

[KA-T]

I have the same kit. And I have been having trouble getting the BOV to open. I get compressor surge. "Phh Phh Phh Phh Phh" (A quick flutter.) I also checked the line the BOV is hooked up to...and I'm getting a good 15vac. Are you able to hook up your BOV and Boost gauge to the same vac line??

Btw autometer makes some good gauges...thats what they do...they make guages...I think they are better quality than most the stuff out there.

[teddy]

KA-t...Try loosening up the tension on the bov, meaning loosen the screw on top of the bov, but not too much. There is a happy medium that you need fine.

[Craving4Boost]

I have the same kit. And I have been having trouble getting the BOV to open. I get compressor surge. "Phh Phh Phh Phh Phh" (A quick flutter.) I also checked the line the BOV is hooked up to...and I'm getting a good 15vac. Are you able to hook up your BOV and Boost gauge to the same vac line??

Btw autometer makes some good gauges...thats what they do...they make guages...I think they are better quality than most the stuff out there.

15inhg vac isnt good..thats low. i have about 23inhg at idle

[Jookmasta]

setup ur decel settings on ur safc to take care of those stalling issues. also loosen up the bov so that u dont have that surge anymore. last but not least, do try not to get into boost too much without larger injectors

[4felix20]

damn, that seems high to me. i was getting around 12 something for vac at idle for a good 12k miles. i really don't know what a good vaccum should be at though.maybe it was the altitude..? just a guess.

[dj_hype]

wait, your tryin to boost 7 psi on stock injectors? do you have an fmu hooked up temporarily or something like that? thats kind of scary. personally, i wouldn't even start the car unless i had my 370s installed. well, i might start it but wouldn't rev it and def. wouldn't take it for a drive.

you said your bov is the reciruclated type but is it setup as recirc or VTA? cuz if its setup for recirc (you have a pipe connecting the output of the BOV to the intake before the MAF) and its stalling, then, something else is wrong.

[KA-T]

I had that BOV all the way loosened....and it still wouldn't open....nothing but compressor surge...i hate the sound of it. It just rings in my ears. I"ll have to recheck my vacuum stuff I guess...........

[2FourTee]

wait, your tryin to boost 7 psi on stock injectors? do you have an fmu hooked up temporarily or something like that? thats kind of scary. personally, i wouldn't even start the car unless i had my 370s installed. well, i might start it but wouldn't rev it and def. wouldn't take it for a drive.

A while back, there was a discussion about this turbo kit on a local board I go to. I basically said I didn't like using stock injectors and fuel pump on their "Stage 1" kit. Next thing I know, someone from IAP was on the message board and said I was spreading mis-information. So, I asked to see dyno pulls with A/F ratios proving that the engine was not running lean with that setup, and never heard back from them. Fact is that at 7 psi, the factory injectors are going to be running close to 100% duty cycle, which is never a good idea. The kit seems fine other than that.

Best bet would be to either get bigger injectors or get a WG spring that limits boost to no more than 4 or 5 psi.
Modified by 2FourTee at 7:03 AM 2/7/2006

[Florida240sx]

Marc I got to defend them.Stock injectors runnign 5psi spring is ok. But according to my wideband it shows if I tried anymore psi than I would be running very lean.I was already lean in a coupel spots with my car at 7psi. IT COULD OF been my car.But that's the result I had. Open up your wastegate and switch springs.AZhitman and I both got 5psi springs whil geoman got a 10psi spring.Check the spring I bet it's red and gray.