Thread: My Best Friend known as KR... Need Help

The only problem he's having right now is to small of a pulley so he's not throwing a cam into "fix" it it's to lower KR. I'm pretty sure you mean gen V not IV.

Originally Posted by dsmuts

The only problem he's having right now is to small of a pulley so he's not throwing a cam into "fix" it it's to lower KR. I'm pretty sure you mean gen V not IV.

If he can't run a 3.4 pulley with the mods he has on a Gen III on a low compression motor then there is a problem. Plus the fact he said his LTFTs were at +3 to 5 at WOT so something is off.

He also mentioned that he is seeing 5 to 6* of KR from a 50 roll....Sounds like a torque converter or TCC table not set up right to me. To test this theory, I bet if he disabled TCC lockup until 4th then ran the car again he wouldn't have the KR at a 50 to 60 roll WOT. It also seems like he needs a better MAF tune for sure and possibly has some fueling issues.

I did mean Gen V it was a typo...considering I have one on my car. lol

I had to run modded 1.9's on my car to run a 3.4 safely but I get what you mean about the tune being off.

Gen III blower and the car has around 160,000 miles on it and maintained very well. Lets end the "throw the cam in convo" because that is not an option for at least a year or so as I mentioned before the money is being saved for a supercharger for the charger. So I definitely think a solid tune could help.

Like it has been stated in here, I'd also check to see if there IS enough movement on the motor for the downpipe to be making contact with the swaybar under load...could be false knock...but I'm doubting it since you've replaced all the mounts...check the swaybar for contact though...as there will be obvious marks.

Having an MPS right now makes this an easy thing to figure out...I for one would be happy with the 4* of extra timing (since you said you were seeing 12*)...and toss a 3.6" on there and be done.

If you don't want to swap pulley sizes...then I'd pick up a wideband and go from there...also, a ported blower will help with flow...and lowering outlet temps...might help killing a little bit more KR as well when you do the re-tune.

And for the 3rd thing...there is TONS more load on the car in 3rd...than say 2nd or first...which is why when you see people popping pistons...they were running the ever living pee out of them.

absolutely no contact what so ever. I flipped the sway bar and relocated the O2 sensor so it won't smack the firewall or the sway or anything for that matter.