USEDGOLDFISH

Before I get started I have researched these issues with little to no results....

I have a b18b1 with a garret 60 trim @ 10psi and right now I am having issues with Cold startups I will start the car it goes to 2k rpms while warming up as soon as you touch the gas the car just stops. it instantly drops below500rpms (ish) and then sputters really bad while climbing back up the in rpms. Once it warms up the car idles and rev's fine. Sometimes the car won't even start started I will have to start the car and keep pumping the gas pedal to keep it going and all it does is sputter for a couple seconds then it dies and I can start it and it will stay running

Other issue is sometimes (becoming more frequent) i will be driving normal daily driving and the car will go lean and just start sputtering really bad for a couple seconds and then drive normal.

Only thing I haven't really checked is the tune. I had an exhaust leak when i last had it tuned (3 bolts were stripped out in the head) and since then has been fixed but not retuned

My Setup
1993 Si Hatch
Stock b18b1 with ARP Headstuds GSR Tranny
Garret 60trim
Ebay IC and piping
Tial 38mm wastegate
Tuned on Crome

Things I've checked
Fuel Pump
Fuel Lines
Wiring (half *** checked)
Injectors
Compression
Spark Plugs
Dizzy Cap
Plug Wires
Retune coming soon if nothing else works.

Turbo-LS

iTrader: (4)

Well an engine can only do what the ecu is telling it to do. If the tune isnt all there then it will run bad. You need to check temp corrections. Also make sure they car idles fine with the IACV unplugged. Idle screw should be set to 800rpm and then plug the iacv back in.

USEDGOLDFISH

*Noob question alert*

What do you mean by check temp corrections?

And I will do the IACV today after work.

EsotericImage

iTrader: (8)

^^

He means the tuner needs to check the temp corrections.. Id suggest also the fuel tables on cold start up as well.

USEDGOLDFISH

okay my car idles around 600rpms when warm well i did the IACV thing and had it at 800 steady when the valve was unplugged i plugged it back in and it went back to 600

Turbo-LS

iTrader: (4)

Idle needs to be adjusted now in the tune

USEDGOLDFISH

Okay thanks ill update after my retune I really hope thats the problem i hate trouble shooting problems like this

I do have one more question my motor is a 97 b18b1 with 450 dsm low impedance injectors i have some 550's high impedence injectors in my garage do i just bypass the resistor box to wire them in?

rich7777

You can just remove it (I think). But yes, the idea is to bypass it...

Your user name is funny lol, and very random...

USEDGOLDFISH

Got the idle fixed and the car was running good till this weekend

i was heading home and the car just died while on the highway...wouldn't start or it would start and as soon as i touch the gas it would die this went on for like 10-15 min got it started it drove for about 2 miles then did the same thing.

Next morning started up and drove like nothing was wrong... then take it out that night same problem... this time it threw a code but when i turned the car off and turned it back on it went away.

I am thinking distributer but i don't want to spend the money if that isn't the problem (pretty much what i've been doing) but i'm running out of ideas and getting really frustrated with this car right now...

anybody have any other idea's as to what it could be. Thanks in Advance