Turbo KA-T will not idle need help.

Post by **darknite** » Sat Jan 06, 2007 2:26 pm

OK my 240 been turbo for a while now and the stock motor blew at 15 psi of boost so i did a rebuild with the arias 8:5.1 pistons a cometic head gasket and thought while i was in there i would put 440cc top feed injectors on it.It does have a safc 2 and a PLX wide band and its only set a 5psi of boost untili get everything right the car sounds like its got a real bad miss in it. anybody got any ideas whats going on?

Post by **WDRacing** » Sat Jan 06, 2007 3:42 pm

Well a miss could be almost anything bro. Thats like me telling you my Blazer has a miss...kinda hard to troubleshoot.

Have you checked anything? Plugs, wires, Vac leaks, timing...I could go on.

WD

Post by **ceningolmo** » Sat Jan 06, 2007 3:48 pm

Please click on the link in my sig. Please. Please.

BTW... Welcome to NICO. I hope you get the problem figured out.

Post by **darknite** » Sat Jan 06, 2007 4:42 pm

Well i put new plugs in because they were soaked with fuel,ten while it was somewhat running i pulled each plug wire and they were all good,i've looked everywhere for vac leak with some spray no change although i'm only pulling -10psi of vac.Is there anyway possible that the cams are off?

Post by **DRFT(kinda)** » Sat Jan 06, 2007 4:54 pm

I'm not an expert at this, but I think at idle it should be around 20 vac. Cams could be off, but it would run REALLY bad. Do you have aftermarket cams? What kind of MAF are you running?

Post by **Florida240sx** » Sat Jan 06, 2007 7:16 pm

Vaccum at idle should be -20 Do a boost leak test to see if it's a vaccum issue. When my intake cam was off one tooth my vaccum was at 10 and wouldn't idle.

Post by **Joe** » Sat Jan 06, 2007 7:44 pm

you arent pulling enough fuel from your SAFC to control those 440's

and honestly, i dont think you can pull enough. SAFC's are garbage. get a real setup.

Post by **Florida240sx** » Sat Jan 06, 2007 8:45 pm

I controlled my tomei 555cc. Why do you say he can't? I know other people that have done the same.

Post by **WDRacing** » Sun Jan 07, 2007 11:38 am

You'll have to ignore Kamin as he thinks Piggybacks are the devil, his Momma told him so...

The SAFCII works just fine to tune a mildly boosted car, I have one myself. People who are retarded will have trouble with any tuning device no matter what it is. So they often blame somthing so as not to look dumb. I've tuned my 42lb injectors down to an idle AFR of 15:1 while running 60 psi base fuel pressure.

The main issue here is that we have no idea whats been done to the motor. It could really be a ton of different things.

If you have no vacuum then you have a leak somewhere, so start there and work yout way through the system. The key to having a well tuned turbo motor is to have a well running NA motor first. If it doesn't run in NA form, a turbo is only going to complicate things 100 fold.

Here's what I recommend, have the motor setup like NA. Have air pulled through a single intake pipe and the MAF. That gets rid of the turbo and all associated plumbing. Tune the SAFC to run at 14.7:1 AFR exactly once its warmed up. Then look at the vacuum. If its not sitting close to -20, you have an issue. If it is close to the target vacuum, and its still stuttering like a kid from Florida, then you can start looking at other things. So start there and get back to us.

WD

Post by **Florida240sx** » Sun Jan 07, 2007 3:34 pm

WDRacing wrote:and its still stuttering like a kid from Florida,

WD

Is that directed towards someone??

Post by **virus77** » Sun Jan 07, 2007 4:12 pm

http://www.nicoclub.com/articles.php?id=158784

Post by **Chezedik** » Sun Jan 07, 2007 4:58 pm

-10psi of vacuum is 20"Hg, which is very reasonable for idle. Or did you read the gauge wrong?

Post by **WDRacing** » Sun Jan 07, 2007 5:04 pm

Of course its directed at someone

Post by **Joe** » Sun Jan 07, 2007 7:16 pm

WDRacing wrote:You'll have to ignore Kamin as he thinks Piggybacks are the devil, his Momma told him so...

all your ignition maps are based off of airflow right?

using a piggyback to modify airflow = wreaking havoc on your ignition maps. im not denying a SAFC or other piggyback will WORK im just saying there are MUCH better options out there and when its all said and done, it dosent cost that much more.

do it right the first time, or dont do it at all

Post by **WDRacing** » Mon Jan 08, 2007 6:58 am

Well whats right is all in the eye of the beholder you big jerk. I'll agree that there are definitly better options out there. MS2, the new ECU rom tunes like Biki etc. The SAFC should always be mixed with the MSD BTM as far as I'm concerned. I have never had any issues with knock at all.

The ROM tuning is fairly new and alot of peeps don't know about it, aside from say JWT. The SAFC, or Emanage have been used more often then not. I believe the people who ran into issues had no timing retard on boost, like Greg.

WD

Post by **Joe** » Mon Jan 08, 2007 7:29 am

the BTM is 400$, the SAFC is $300, now your at $700 for a piggyback!

you can nearly go full standalone for that price! (Apexi Power FC, $900~) alot of places will even throw in a commander for free if you want to self tune.

and as for the rom tuning, its too early to tell how good that **** is gonna be in the long run. all i can say is i have a couple friends who have tuned their own cars with a biki and have had NO issues for over a year now. track cars too. romtunes are even cheaper than full standalones

im just playing devils advocate showing there are better options out there for the money

Post by **Chezedik** » Mon Jan 08, 2007 8:25 am

We still haven't covered Emanage at 250 for both harnesses.

Post by **WDRacing** » Mon Jan 08, 2007 9:08 am

BTM is 130 retard....MSD6 BTM is 400. You don't need any spark enhancement until you're making decent numbers, in which case the SAFC isn't going to work out for you anyhow.

Post by **S13FX** » Mon Jan 08, 2007 9:10 am

I heard sand from Hawaii in the maf helps a lot too for idle. What you need is a big dose of Polish Powah

Post by **WDRacing** » Mon Jan 08, 2007 9:23 am

So far though, I'm a MS2 guy if it comes to upgrading.

Post by **WDRacing** » Mon Jan 08, 2007 9:34 am

Chezedik wrote:We still haven't covered Emanage at 250 for both harnesses.

Emanage = The Gheyness

Post by **darknite** » Mon Jan 08, 2007 9:40 am

I've got factory cams and factory MAF.I called JWT tech line today and they said i need a 96' ECU a z32 MAF and send it to them to flash it.But, i'll have to change to 50lbs injectors instead of the 42lbs top feeds.

Post by **darknite** » Mon Jan 08, 2007 9:43 am

I thought the cams might be off.But, someone told me that the car wouldn't run at all and beleve me the thing runs like sh*t right now but it will run.Of course i wouldn't dare drive it down the road.

Post by **darknite** » Mon Jan 08, 2007 9:45 am

Always a day late and a dollar short.What sould i go to then?

Post by **Joe** » Mon Jan 08, 2007 9:46 am

WDRacing wrote:BTM is 130 retard....MSD6 BTM is 400. You don't need any spark enhancement until you're making decent numbers, in which case the SAFC isn't going to work out for you anyhow.

eat my ******* you son of a *****

piggybacks suck.

Post by **WDRacing** » Mon Jan 08, 2007 9:49 am

I doubt the answer is a JWT tune, they just want your money dude. Have you set the AFR for idle yet?

Post by **darknite** » Mon Jan 08, 2007 9:50 am

Well i guess thats the right thing to do because i had all that emissions stuff removed.(The joys of living in the redneck part of the country).I keep thinking that there's a leak somewhere.Thanks

Post by **Joe** » Mon Jan 08, 2007 9:59 am

how did you set your SAFC to control the injectors?

Post by **darknite** » Mon Jan 08, 2007 10:24 am

Well i've been hearing about this MSD BTM and i'm pretty sure that i need that.How much are those? Also, do you know anybody that has a 96' ECU for sale?

Post by **Chezedik** » Mon Jan 08, 2007 10:46 am

I have a Z32 MAF for sale, check my sig.

Oh yeah, and EMB = control for the cheapness, but you stick with your patchwork setup. LOL!

Turbo KA-T will not idle need help.

Turbo KA-T will not idle need help.

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