93fbody

I have a 93 z28 and it hits is limits at 107mph and i'm sure it could do more? anyone have any ideas how i can make it have more top end?

CRAZZ28

iTrader: (13)

Thats a speed limiter. If you are hitting the rev limiter theres something wrong with your transmission. A mail order tune will cure the speed limiter issue

silverz28camaro

iTrader: (20)

What gear are you in when it does this? It sounds like you are hitting the factory speed limit. I think most dyno shops with the right software can up this a bit for ya.

Please tell me you are older then 20 and are not going out every night topping out your car.

1996camaross

Should be alot higher than that, I hit 165, and that was where my speed limiter was... When I was stock

93fbody

well honestly i havent gotten it that fast yet, but on the other hand my brother did and he said at 107 is all it does, a friend of mine said i would have to order a programmer and that would fix the problem?

93fbody

im in final drive auto tranny

93fbody

no i'm 16 and i don't rag it out either just got it a week ago

CRAZZ28

iTrader: (13)

The cars that were factory equipped with z rated tires had no speed limiter. the ones that came with the not z rated tires had a limiter around 106-112.

93fbody

well i don't know much about cars right now i'm just starting out, so could u dumb it down for me?
haha

93fbody

also i ordered an underdrive pulley and lingenfelter cold air, and sometime in march i'm ordering headers, after that any advice for what should come next?

CRAZZ28

iTrader: (13)

since you are going to be getting headers i would wait to have the speed limiter removed until you get the car tuned for the headers and intake

BizZzatch350

iTrader: (33)

Get a tune to get rid of the speed limiter, 3.73s gears and a torque converter. Open your glove box, which one of these RPO codes do you see:

GU2 Axle, Rear 2.73 Ratio
GU5 Axle, Rear 3.23 Ratio

A good running full bolt on LT1 can go 12s easily.

93fbody

Ok thanks, and i cant look at my car right now my heater core went out so it's getting fixed right now, but i'll make sure to look when i get it back.

93fbody

but i'm mainly just doing bolt-ons, so any suggestions bout what i shoud be looking for?

silverz28camaro

iTrader: (20)

Just be careful man, some kids don't realize how fast these cars are and how easy they are to get out of control.

Is he sure it hit a limiter??? maybe its down on power, How many miles? fuel filters get clogged easy on these cars. My 2000 z28 had 99,000 miles when I changed mine, I cut it open and I was surprized at how much **** was in there. Its so cheap that I replace it every 10,000 miles.

If your filter gets restrictive you run the risk of overheating the fuel pump as well and thats why most fuel pumps go bad. Do an overall tune up.

plugs, wires, air filter, oil change, fuel filter, clean MAF.

93fbody

it has 68k miles on it, and yeah i've been pretty careful i usually don't speed in it, i just want something so i'm not left out of the group with my friends lol they have 06 stang gt and 98 ta, both kill me

CRAZZ28

iTrader: (13)

Read the newbie faq sticky in yellow at the top of this forum. its got a lot of good info and will answer quite a few questions.

93fbody

he said that the rpms were up and everything on it so i guess i mean i wasn't with him he did it while i was in school,

93fbody

don't see it?

93fbody

talking to my brother and he said rev on it, said it bounced like one