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

True Duals WTF!!!

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Old Jul 23, 2008 | 02:52 PM
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Default True Duals WTF!!!

I just got some true duals on my bird and it feels so slow now. Feels like it has no torque or power. I had magnaflow on it before i just got the duals. I have a x-pipe into borla XR1's then dumped straight down before the axle. Can someone tell me this is what to expect with duals or do i have something wrong? The exhaust is 3 inch

Thanks Calvin
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Old Jul 23, 2008 | 03:42 PM
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Got a question how does it sound thats wat i was going to do to my car that same set up on my 96' SS ??? But i would go to that track and find out if it ran slower then there mite be.
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Old Jul 23, 2008 | 03:53 PM
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What I think is the car is breathing better and has more power than before it's just you make your peak torque at a higher RPM now. That is just my guess. Does it seem to pull harder up top?
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Old Jul 23, 2008 | 04:01 PM
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it sounds allright, i like loud exhaust, but it has a tone. yes it does seem to move faster up top. didnt know if i should have it tuned again since i have duals now.
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Old Jul 23, 2008 | 04:03 PM
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but when i launch it the tires dont spin or anything it just goes. It dont want to slide around corners.
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Old Jul 23, 2008 | 04:26 PM
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Take it to the track, that will be the final determination. What was the weather like when you ran the 13.6 @101?
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Old Jul 23, 2008 | 04:47 PM
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i would say high 80's i ran that in Kansas city at the LTX shoot out . i plan on going to the track real soon.
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Old Jul 23, 2008 | 05:26 PM
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wait, you live in augusta? sweet, i live down the road from you. i live in eldorado, and need to go back to the track too. let me know when you go and i will go with you.

to your question, maybe you need an LT4 Knock module?, but that wouldn't make any sense if you think its faster up top.
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Old Jul 24, 2008 | 10:54 AM
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i have a LT4 knock modual thats just it. 67goatman455 hell yeah lets go to the track. i will send you my number so you can get ahold of me.
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Old Jul 24, 2008 | 01:09 PM
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Lt's are like that with true duals,when i put in my exhaust i lost the torque that would kinda throw me back in my seat from a stop,so now i cant really chirp my wheels like i could with the stock exhaust,but power seems to be higher at midpoint.
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Old Jul 24, 2008 | 01:12 PM
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I have the exact same exhaust on my car, I don't have any problems blowing the tires off.
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Old Jul 24, 2008 | 01:32 PM
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jon5212 you also have a ls1 with gears and a m6. i have stock stall and gears and a4
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Old Jul 24, 2008 | 01:37 PM
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Originally Posted by 94Aquaformula
jon5212 you also have a ls1 with gears and a m6. i have stock stall and gears and a4
thats cause you are moving more air through than the OP.

you feel like you are losing power because you are losing back pressure. which is probably giving you a few more hp but the same or maybe a little less tq.

now, to remedy this problem... cam it
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Old Jul 24, 2008 | 01:52 PM
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There's no way that you lost power or torque, what you feeling is that it has shifhted to higher rpm than before thus feeling slower in the lower rpm range.

I say put a decent tq convertor (like a 3600ish yank or precision) to take advantage of the new rpm range and don't look back.

On a side note, did you take any pics of your duals? I'd like to see them if you did...

btw, I'm from wichita, and I was at the LTxshootout too
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Old Jul 24, 2008 | 02:30 PM
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It feels like you lost power cause you did,at the rpm you are used to feeling low end TQ,that level has moved up a bit.The loss you feel is worth the gain up top
You definately need to go to the track! If you did lose power you may have a miss caused by burned wires,been there done that..
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Old Jul 24, 2008 | 02:32 PM
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Do true duals really sounds and performe that much better? Just trying to figure out the obsession with them.
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Old Jul 24, 2008 | 02:35 PM
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Originally Posted by 94Aquaformula
jon5212 you also have a ls1 with gears and a m6. i have stock stall and gears and a4
Then get an LS1 and put some gears and an M6 in that bitch! LoL I'm just kidding man. They overall will help the car breathe with LT's and as others have said the powerband has changed on the car and you aren't used to it yet. I would suggest a stall and that should solve 99% of it right there.
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Old Jul 24, 2008 | 02:41 PM
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Originally Posted by Jon5212
Then get an LS1 and put some gears and an M6 in that bitch! LoL I'm just kidding man. They overall will help the car breathe with LT's and as others have said the powerband has changed on the car and you aren't used to it yet. I would suggest a stall and that should solve 99.9% of it right there.
fixed
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Old Jul 24, 2008 | 11:37 PM
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you guys are awesome! thanks for the info. By the way i popped the hood tonight and i looked really close at my msd blastor coil and found that is arching blue around it. Are you supposed to be able to see that?
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Old Jul 25, 2008 | 08:01 AM
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No you shouldn't see arching around the coil, might have a bad plug wire or that coil may be bad.
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