2000 z28
Thread Starter
Teching In
Joined: Oct 2015
Posts: 11
Likes: 0
2000 z28 Have a 2000 z28 75000 miles. Just recently put slp lid and ssra kit. Other than that it's completely stock. It runs 9.5 sec at 76 mph. Clearly something is wrong but can't figure why I'm not getting a lot of power. The back o2 sensors are pulling up in codes but I don't think that would effect the performance. Any ideas on why I'm not getting the power I should and what I can do to help my car out.?
Put it on a dyno and see what it's actually making and if there are codes getting thrown... Fix that it will screw with all kinds of stuff depending on why they are getting thrown. Could be causing the car to run pig rich or very lean with a bunch of knock retard killing power.
Anyone with a scanner can tell you what's going on, and a dyno pull will confirm.
You make no mention of the 60 foot time as well if that's garbage it's never going to et.
Anyone with a scanner can tell you what's going on, and a dyno pull will confirm.
You make no mention of the 60 foot time as well if that's garbage it's never going to et.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Your Et that's crappy, you're missing .4 in the 60 foot and there would be another .2 you'd get to the 1/8th if the 60 foot was right.
So if you had the car leaving right/driving it right it would be going 8.9 just from that at likely another couple mph or so.
Is this a auto or stick car?
So if you had the car leaving right/driving it right it would be going 8.9 just from that at likely another couple mph or so.
Is this a auto or stick car?
Thread Starter
Teching In
Joined: Oct 2015
Posts: 11
Likes: 0
Your Et that's crappy, you're missing .4 in the 60 foot and there would be another .2 you'd get to the 1/8th if the 60 foot was right.
So if you had the car leaving right/driving it right it would be going 8.9 just from that at likely another couple mph or so.
Is this a auto or stick car?
So if you had the car leaving right/driving it right it would be going 8.9 just from that at likely another couple mph or so.
Is this a auto or stick car?
Fixing that would be a start yes, and I would start looking at why are you cutting a 2.4 60 foot when stock untouched cars with zero mods can go 2.0 with automatic transmissions.
You have something wrong with your starting line technique/driving, etc. No way should a stock A4 car be that bad. It's either completely down on power, like 100 hp worth, or you are doing something screwy like pulling up to the starting line with wet tires or something.
You have something wrong with your starting line technique/driving, etc. No way should a stock A4 car be that bad. It's either completely down on power, like 100 hp worth, or you are doing something screwy like pulling up to the starting line with wet tires or something.
TECH Junkie
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
Even if his 60 is terrible his mph still shouldn't be 76. Should be along the lines of low to mid 80s
For instance my 01 hawk m6 would run 110 mph in the 1/4 with a 2.2 60 or 1.8 60
For instance my 01 hawk m6 would run 110 mph in the 1/4 with a 2.2 60 or 1.8 60
TECH Junkie
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
But in the eighth if he is spinning half way down there is not much room to get your trap like there is in a quarter.
Same night I ran door to door with a turbo mustang. His 1/8 ET was almost identical to mine and only a few thousands faster in 1/4 . But his mph was like upper 90 something in the 1/8 to my 86 and his 1/4 was deep 120s to my 110.
Said that to say spinning isn't going to affect your mph that much but more of your et
Said that to say spinning isn't going to affect your mph that much but more of your et
where are you racing it ? super high altitude or very hot temps can numb a car also or more likely compound with other issues. A 2.4 60 foot on a rwd car trapping 76 is just not right like others are saying the trap says your not making power so you should be able to get it moving without too much drama. Is this a traction control car that your trying to launch using traction control ? what is on the car for tires ? are you going around the waterbox or through it with treaded tires ?
Rear o2's monitor cat health. If you still have cats and they are restricting the exhaust flow, you certainly should fix that. If you removed the cats and are just throwing codes, it should not hinder performance.