Just wondering what rpm you guys shift at? I'm running a 2.6", coming from a 2.8" and I can feel the car lose power after 6500 compared to the 2.8". How much is the 2.6" actually overspinning the blower at 7000rpm?

 

belt slip?

 

Do you have a the belt tensioner?

 

belt slip for SURE. at 6500 I used to get slip.

 

No slip at all guys, I'm running stage 2 belt and oversized tensioner pulley. I'm not loosing any boost.

It seems like 6500 to 7000 rpm takes for ever like I'm past the power point.

 

u know its funny, thats actually where youll start pulling on a 2.8" car. WHen I had the 2.6 I raced a balt with the 2.8 and I would pull at around 5 to 6k in second gear and third gear would be a constant pull.

 

Plus I'm only running like 13-14 max timing WOT!!! Still have a bit of knock here and there too.

Also my last run when loggin yesterday at 6500 the car just died! Felt like I hit a brick wall, in the HP Tuners log is showed nothing odd. Looks like the car just didn't spark.

 

spark blow out?

 

I was kinda thinking that too but I hit 7100 a few times before when tuning my a/f ratio and it kept climbing.

 

7400+

 

LOL That's awsome! Poor supercharger!

 

7100, and for 14 degrees and still knock? you running 91, I know gp doesn't have any 94

 

I'm running 93, that's the highest I can find. My car has always been a bitch to tune though. My car has always not liked timing for some reason. It does work really good though, I know it's not lacking by having less timing or anything. I plan on getting a meth kit in a few weeks so that will help a lot. I'm thinking about getting the Devils Own progressive kit.

 

that sounds really odd. you should post your logs and a/f so these guys can have a look.

 

I'm sure about my tune, I don't have any problems there. I've put a lot of time and gas perfecting it. Research, Reserch, Research lots of that too!

 

Maybe your mounts are giving you false knock....

 

I don't have them in yet, just got them today in the mail.

 

Dude I can send you a couple of tunes if you want to try them. I shift at 7200 all the time. Use at own risk it goes super rich up top for some reason I am still working on it.Maybe you could try it do some tweaking and once you get it dialed in send it back. I am running 2.5 pulley dual pass intercooler and extra he.pm me your email.

 

pm sent

Here's a screen shot of my log where the car felt like it hit a brick wall around 6500, then I let right off it. I though I screwed up a piston (need an excuse for new pistons anyways).



Here's another shot of the run before the one above when I was trying to get rid of the knock and fixxing the a/f ratio. I was getting 5 degrees of knock at only like 13.5 - 14 degrees of timing. This is on 92 octane btw.