KR on stock pulley

**Dallasneon** · 04-09-2010

I don't post much, I just do a lot of reading. Anyway I just got a ScangaugeII and went for a drive last night. At full throttle I'm seeing about 3.1*KR. Is this normal on a stock car?

The only thing I have done is added a FWI and did the 180* tstat and autolite 104s when i did the maintenance. I did these to try and reduce KR and in preparation of the pulley drop. I have a 3.4 pulley but i didn't want to install it before i could scan for KR. Also I have SSAC headers but they are not installed yet. Thanks in advance.

**TorqueAutoMotiv** · 04-09-2010

yea its norm some car dont have any some do

**Lawngoose** · 04-09-2010

Put the headers on and it should help.. also a good tune to address any fueling issues.

**blueguy** · 04-09-2010

Plus...if you still have a stock DP and U-Bend...with the Fenderwell your bringing in more air than getting rid of it. I bet if you'd get a DP and or a U-Bend Delete almost all of that KR would go away...then again...you said you have headers so it doesn't matter..those will kill ALL of your KR.

**Dallasneon** · 04-09-2010

Great news! I'm doing my struts this weekend and then the headers go on next weekend. If I still have some KR after the headers should I hold off on the pulley? Or do the pulley and just take it easy until i get the tune? Or will I ever be able to completely eliminate my KR?

**Bio248** · 04-09-2010

a tune will more than likely net you what you want. i would wait on the pulley until right before you do the tune. no reason in running more boost when your car doesnt know how to use it.

**Lawngoose** · 04-09-2010

You shouldnt drop pulley's without a tune or at least knowing how much KR you are getting before hand.

Increasing the intake and exhaust ... like BlueGTP and BIO mentioned is a great way to reduce and/or eliminate KR. However, fueling changes (A good PCM tune)... will also help.

**Dallasneon** · 04-09-2010

Here is my plan. Next weekend I'm going to do the headers and scan again to see If i got rid of the KR. I found a guy locally with HP Tuners that will do a full tune for $275, right before he does the tune I'll drop pulleys. Sound good?

**Bio248** · 04-09-2010

good plan.

**blueguy** · 04-10-2010

Only a good plan if he knows his ass from a hole in the ground with HPT.

**Dallasneon** · 04-10-2010

Originally Posted by bluegtp91

Only a good plan if he knows his ass from a hole in the ground with HPT.

This is true, the guy owns a GTP and says he has tuned several others locally. I know nothing about tuning. I have been doing a lot of reading, trying to arm myself with some sort of knowledge of tuning a car before I give it to him. I guess my fear is he will just load a previous tune and not really do a custom one for my car based the parts I have.

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