Heating issues making me a bit worried.....(LONG) TIA!

[DJDeuce66]

Ok I am running a bit below 15 pounds on my 1997 GST Spyder.

I have an Apexi S-AFC and I was tuned by Motec Performance from turbotrix in new jersey.

I have an EGT from autometer in my pillar. The probe is in the 4th in my exhaust manifold.

Turbo trix did all the work.

Here is the problem...whenever I drive on the highway 60+ mph my temp guage reads bet 1400-1600. Gets very close to 1600.

When I am pushing the car and boosting bet 5-10psi it pins at 1600 and 1600+ sometimes.

I also have an air fuel guage that I can never really read that accurtly (its the one with the light that moves circular from side to side) but what I can say is that whenever I give it gas it shoots to rich (green) and when i'm cruising its moves side to side close to the middle.


I am going to turbotrix this sat...but otherwise...what is the problem and please tell me its a defective guage or probe....

P.S. I have no heatshield.

THANK YOU GUYS SO MUCH!

 

[gixrman]

Sounds like you are running rich, unburnt fuel is still being burnt in your exhuast. mine runs at 1400 at 80mph (3k) and according to my pocketlogger the ECU is still pulling fuel. What are you running (turbo, injectors, ect......)? Your first mistake is going by that A/F gauge.

 

[DJDeuce66]

Originally posted by gixrman
Sounds like you are running rich, unburnt fuel is still being burnt in your exhuast. mine runs at 1400 at 80mph (3k) and according to my pocketlogger the ECU is still pulling fuel. What are you running (turbo, injectors, ect......)? Your first mistake is going by that A/F gauge.

Yeah I was thinking that too. Stock turbo at 15psi stock injectors. How can I lean it out a bit...I'm new to messing around with the safc since I had it all done for me.

thanks bro

 

[Violater101]

Having no heatshield is not going to cause false readings, but I would put it back on if you still have it (just to reduce the temps under the hood). If your EGT's are around 1600psi at low boost, it sounds to me that you have some severe knock issues. As others pointed out, don't rely on that AF gauge that you have, but it does sound like you are rich which is causing the knock.

 

[DJDeuce66]

Originally posted by Violater101
Having no heatshield is not going to cause false readings, but I would put it back on if you still have it (just to reduce the temps under the hood). If your EGT's are around 1600psi at low boost, it sounds to me that you have some severe knock issues. As others pointed out, don't rely on that AF gauge that you have, but it does sound like you are rich which is causing the knock.

I see, so to fix these issue, I would have to lean out the car a bit via the SAFC? if so i should bring it to my shop then...thanks again

 

[gixrman]

You need a logger or a wideband o2 to see whats going on. Blind tunning is a surefire way to destroy your motor. You cannot lean out with a AFC without knowing whats going on. Even with a logger its difficult because the tunning window with the stock o2 is so narrow. On a 2g your more or less going by the timing advance since you can't read knock. you should do alot of reading on tunning and the AFC before attempting any changes.
Or just have the shop do it.