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

Project "bad ass" TRUE DUALS underway. Please comment on my design.

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Old 06-29-2009, 09:37 AM
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Originally Posted by wrd1972
Here are the sound clips:
Idle, no cats, cutouts closed


Idle with dual cutouts wide open


I am extremly pleased with the sound. No rasp, machine guns (Cutouts open) or drone period.
Very nice! Whats it idling at?

Sounds pretty familiar .
Old 06-29-2009, 09:54 AM
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Let's hear some driving vids, inside and out!
Old 06-29-2009, 10:22 AM
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Originally Posted by Puck
Very nice! Whats it idling at?

Sounds pretty familiar .
Idle is set at 950RPM.

I will get some more vids driving ASAP.
Old 06-29-2009, 10:33 AM
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Originally Posted by wrd1972
Idle is set at 950RPM.

I will get some more vids driving ASAP.
I had mine at 800 with a 227/233 110LSA grind and it loped hard on the stock shortblock. You could feel the bass in your stomach . Mine didn't go out the back though, so yours will be a lot more pleasant to drive around in - highway drone is pretty bad dumped before the axle
Old 06-29-2009, 06:56 PM
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Originally Posted by Puck
I had mine at 800 with a 227/233 110LSA grind and it loped hard on the stock shortblock. You could feel the bass in your stomach . Mine didn't go out the back though, so yours will be a lot more pleasant to drive around in - highway drone is pretty bad dumped before the axle
I am planning on playing with the idle soon. I am going to see how it sounds at 800 rpm.
Old 06-29-2009, 10:42 PM
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Originally Posted by wrd1972
I am planning on playing with the idle soon. I am going to see how it sounds at 800 rpm.
Very interested
Old 06-29-2009, 10:47 PM
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omg that sounds so beautiful! im jealous! so very very jealous! more vids are needed asap!!!
Old 06-30-2009, 06:37 AM
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Originally Posted by Puck
Very interested
What is the parameter in tuner cat tht allows you to make the adjustment to idle?
Old 06-30-2009, 10:04 AM
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Originally Posted by wrd1972
What is the parameter in tuner cat tht allows you to make the adjustment to idle?
Target idle under the first constant section IIRC. Been a while since I messed with tunerpro software.

**edit** Opened up tunerpro and its under Tables/Functions, my bad.

Last edited by Puck; 06-30-2009 at 10:13 AM.
Old 06-30-2009, 11:53 AM
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Thanks, I saw that parameter in tuner cat. I will tweak it some tonight.
Old 06-30-2009, 12:25 PM
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Hey:

Are you going to market or sell this design in the future?

Dub

When In Doubt Do Without
Old 06-30-2009, 12:33 PM
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I agree. You could probably sell a few of these systems.
Old 06-30-2009, 01:08 PM
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Car definitely has more low to mid end power than with the Borla and ORY. Cant wait to see it on the dyno, but that wont happen till Fall when its cooler.


Originally Posted by 1993 z28 f1
Hey:

Are you going to market or sell this design in the future?

Dub

When In Doubt Do Without
I dont plan to market them, UNLESS I find my self unemployed in the future. Knock on wood.
But if someone is wanting to shell out some major bucks, and I do mean major, they can contact me.

Last edited by wrd1972; 07-04-2009 at 11:06 AM.
Old 07-03-2009, 11:28 PM
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Nice setup!!
Old 07-04-2009, 01:50 AM
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holy... crap.

everything i could have ever wanted in any exhaust system i've ever owned. right here. i'm done with ******* around with u bolts, y pipes and catbacks.
Old 07-06-2009, 07:50 PM
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Hey Puck,
I lowered my idle from 900 to 800 RPM in the tune. It does lope just a little more and does sounds overall a bit better. When I check the Scanmaster tach, it shows around 850 RPM asopposed to the 950 RPM on the previous tune. I might be able to lower it another 50 RPM or so.
Old 07-07-2009, 12:39 AM
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Originally Posted by wrd1972
Hey Puck,
I lowered my idle from 900 to 800 RPM in the tune. It does lope just a little more and does sounds overall a bit better. When I check the Scanmaster tach, it shows around 850 RPM asopposed to the 950 RPM on the previous tune. I might be able to lower it another 50 RPM or so.
Sweet, I bet our cars will sound almost identical from the outside . Mine will have a ton more interior noise though since its dumped right off the muffler before the diff . I am going to put some turn downs angled off it to see if that cuts down on the inside noise once it is all back together.



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