So I hit the track tonight and there was definately something wrong with my car. I ran a 12.7 @103 then I lowered the boost to 22 and rolled out and ran a 13.1 @105. I am on the stock clutch so maybe the clutch was slipping or maybe the car was just knocking every gear up top. Here is what the timeslip looked like.

R/T........... .028
60'..............1.74
330'............5.115
1/8..............7.994
MPH............84.19
1000...........10.535
1/4..............12.701
MPH.............103.23

I am trapping less than a stock IX. help guys please.

 

looks like you are losing it after the 1/8th

 

even the 1/8 is slow as hell I should be trapping about 88mph in the 1/8.

 

I will be also doing a boost leak test. That could be another possibility. This car is good for at least 112-113

 

just does to show you that a dyno graph doesnt mean dick...

 

That is a very unwise thing to say. There is obviously something wrong. A 103 trap is slower than a STOCK IX traps. This car is not slower than a stock IX. Infact it is a whole lot faster.

 

did you feel the knock, was timing being pulled? The car could have been running to lean and pulling timing especially top of third and fourth. I had this problem once I ran a 12.2 at 100 (no power top of fourth). Good luck.

 

it just felt like it wasn't really going that fast in 4th.

 

Does it cut in fourth? Or is it just laggy? Most likely a boost leak.

 

Boost leak maybe? Somethings up with that low trap.

 

Do some logs, might be knocking on 4th gear.

 

the car just feels laggy. I think it is a boost leak or if it is knocking it has to be more than 4th gear because my 1/8trap is low too. everything seems low.

 

I don't think it is knock. Your 1/8th mph & trap are what they should be based on your ET at that point. Your 60 is ok and you could improve on that some. But I really think there is something holding the car back. I would do a boost leak test for sure!

 

Actually the 1/8th ET is really not that great because something is wrong. The car has the power to trap at least 88 in the 1/8 it is going 84. 60' is what it is because of a limited stock clutch, I do not launch off the two step for that reason.

 

I'm saying the 7.9 @ 84 mph is about right. Meaning that the 84 mph 1/8th trap would give you about a 7.9 in the 1/8th. If the car normally traps 88 mph in the 1/8th then as I said earlier there must be something up (boost leak, etc..).