LT1-LT4 Modifications 1993-97 Gen II Small Block V8

why is my car so slow?

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Old 04-09-2007, 01:05 AM
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Default why is my car so slow?

I cant figure it out.. first I run 13.6 and now i just lost to my friend with camaro with only intake and catback. Now we did race on a turn and he had the inside lane but with my mods i should have been able to keep up.

So far all I know is that when we raced from 55ish the car took a long time to get out of lock up.. almost like it was spooling up and then it shifted. (even so I should have been able to catch up after that). And my car feels pretty sluggish down low.

Throw some ideas at me because Im getting really upset about my car lately..
Old 04-09-2007, 01:08 AM
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Could be the Tune..that is the biggest thing that will help you or hurt you.
Old 04-09-2007, 01:10 AM
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do a tune up see if thats the problem if not a tune up wouldnt hurt. my other suggestion maybe your fuel pump is going out and you are not getting enough fuel to the motor
Old 04-09-2007, 01:19 AM
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yea Im gonna run over to autozone and get some plugs and wires tomorrow I suppose.. Im not sure if they have OVC wires tho but its worth a shot to see. I also need to go to cottman to get my car scanned because tuesday I had an SES light and I want to know what it was.

the only reason I questioned the plugs and wires are because they are OVC wires and NGK TR55 plugs. I have a carfax report that says the car was owned by some woman until about 8000 miles ago. The owner I bought it from who did all the mods to it (assuming the plugs and wires as well since they are OVC for long tubes) only put 3000 miles on the car and I put the last 5000 miles. I will check for burnt wires tho and probly just change em anyways.

Last edited by nodnarb481; 04-09-2007 at 01:45 AM.
Old 04-09-2007, 03:20 AM
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Maybe your buddy has a wednesday car. My friends 94 B4C ran 13.62@101 stone stock. With a CAI, Cat back, and a tune it ran 13.34@103. I always though the "it much have been built on a wednesday" saying was a joke but it tends to be true. His car was built on Oct. 20th 1993 and my 94 ran 13.71@100 stone stock was built on september 15th 1993. Another friends 95 Z28 was built on Fri December 9th 1994 and it runs 14.0@98 and all 3 cars were autos with 3.23s and were under 65,000 miles and well maintained. Every car is different. Maybe he just has a good running car.

Jeremy
Old 04-09-2007, 03:23 AM
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Oh and by the way. NGK TR55 plugs are pretty darn good if you ask me. And if you got the green Id grab a set of MSD 8.5mm wires. I put them in every car I work on and never had one problem with them.

Jeremy
Old 04-09-2007, 03:31 AM
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did you get a chance to find out about the SES light?
Old 04-09-2007, 04:42 AM
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lt4 km may help as much so the computer doesnt start pulling your timing high in the rpms
Old 04-09-2007, 09:42 AM
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Im trying to find the spark plug wires for my car. I have the OVC set up. Is there anyone that sells them pre cut and with the boots on already?
Old 04-09-2007, 09:52 AM
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does your friend have an M6... those sneaky little fellers like to hold it in second at 5000 rpm's and take off before your car even downshifts...

my friends m6 runs a 13.9 and i run a 13.4 and from a roll on the highway he pulls from me...(because of the above statement)... but i soon catch up and walk him...
Old 04-09-2007, 10:13 AM
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hes auto
Old 04-09-2007, 11:48 AM
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code 6402 o2 sensor reading lean condition. I dont remember what side.. so now I need to figure out why
Old 04-09-2007, 12:16 PM
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Here is a link to summit for the MSD 8.5mm wires. http://store.summitracing.com/partde...5&autoview=sku

Hope that helps.

Jeremy
Old 04-09-2007, 12:43 PM
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I have OVC wires tho.. will they fit right?
Old 04-09-2007, 01:03 PM
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I dont know of anyone who sells pre-cut OVC wires. I'm pretty sure you have to cut them and put the boot on them yourself. I perfer the Taylor 8mm wires cause I've had MSD wires dry out and crack on me before.

If you're running lean I would guess its either a clogged injector or your fuel pump is getting ready to take a **** on you. It could also be a clogged fuel filter. I would try a bottle of fuel injector cleaner and if that doesn't work, try replacing the fuel filter. Cause I'm willing to bet the fuel filter has never been changed on the car.
Old 04-09-2007, 01:11 PM
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actually.. i changed it about 1000 miles ago haha

thats what I cant figure out.. everything done to this car has been done within the last 5000 miles.. almost everything is new so what the hell shat on me already
Old 04-09-2007, 01:28 PM
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Yea, it would be hard to pinpoint your problem over the internet, and probably just as hard in person. Just make sure every bit of maintenance is up-to-date, because that 13.6 is NOT right for the mods you have. I would think it should be close to....or in the 12s with all of that.

After the maintenance is all caught up if it isn't already, try to get somebody on here to look over your tune. I don't know enough to look at it for you, but there are tons of guys on here who would be willing. Maybe they will find a problem in there.

Are there any symptoms of the opti maybe taking a ****? How many miles are on the car?
Old 04-09-2007, 01:38 PM
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I think you need a tune. Without internal mods I ran a 12.8
Old 04-09-2007, 02:18 PM
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the car has about 63000 miles. Do you think taking it to a shop and asking them to just "diagnos" anything wrong with it would be a good idea? Id imagine it may cost around $100 and then I could just fix everything they say is wrong. I dont know if thats a good idea.. i have a feeling they may just rape me ha
Old 04-09-2007, 03:46 PM
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did you check fuel pressure? should be around 45-50psi


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