Ok... I have not been to the track in over 3 years... (got my car new in 2000)

Since then, my car has gotten a New Z06 clutch, 4:10 gears, Edelbrock torque arm and boxed trailing arms. I have 94K miles... change to NGK plugs about 10K miles ago with new MSD wires. My car dynoed 310 to the wheels N/A last year before the gears.

NOW... I do have a issue... My car is showing the upper CAT code, I guess they are Bad?

Anyway, I ran
14.0 at 102.9 2.27 60ft
13.9 at 101 2.12 60ft.
and over REV third and redlighted... went 14.6@100 2.3 60ft

I suck...

ANYWAY... my best time prior was 13.5 at 104... no suspension mods and stock 3.42

Oh... I was going 12.8 at almost 114 with the 75 shot of NOS...

What do you think???

 

Probably weather/track conditions, and what about your tires? 60' times are kinda crap .

But don't worry, you're not alone ... I've run 14's, then mid 13's, then low 13's, then 14's again!! Like I said, conditions can make it or break it sometimes .

 

My tires are brand new only 3 weeks old... speed rated Z or W michelin Brand.

My 60ft is crappy... I did get a 2.1 which is my best LOL...

But I have gone mid 13s with with a 2.2 60ft

 

if the cats are clogged ur engine cant make as much power... thus slower times...

 

have you had it tuned? How bad is the wheelspin?

 

no tune on this car... I HAVE a ZO6 mass air...


wheels spin is not that bad...

 

Was your car throwing the code when you had it dyno'd 310rwhp?

Your MPH indicates either a serious lack of power (possibly due to the cats), or that you granny-shift with the worst of them.

 

My car dyno'd 313 at the wheels (m6 with 4.10s) and went 12.52 @ 110.04.

Ben T.

 

NO my car started throwing the code about 2 months ago... I had is cleared in the computer but it keeps coming back so I am looking at some MAC MIDS with ORY

 

Ben,

are you running DR tires? That is a KILLER TIME FOR JUST BOLT ONS.

What are you coming out on off the line? 3K rpm?

I am at 4th gear going through the traps...i am guessing 4-5 rpm

 

Honestly, you want to know why you've lost performance when you have a converter code (possible partially clogged cat), and a known problem maker in that non-stock MAF?

 

I've always ran 13s with those 60' times. I'm just speculating, but it seems like your car isn't pulling as hard as it's supposed to be, up top.

How's Bithlo these days? I should have gone Friday but didn't.

Is the track prep decent and how are the crowds?

 

What tires? Any suspension mods?

 

Track is pretty decent... crowds are good... I left early but still got 3 runs within 7-9pm could have gotten a 4th easy.

 

Converter...yeah I am think that...

Also... the MAF is not necessary non-stock. I is a ported/descreened factory MAF