T-Rex results (cam-only A4)
Thread Starter
Joined: Jan 2003
Posts: 1,455
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From: Fort Worth, TX
T-Rex results (cam-only A4) The T-rex was installed 2 weeks ago and I had it tuned on a Mustang Dyno last week. I wasn't real happy with the results 338hp, but the tuner assured me that on a Dynojet it would be about 12-13% higher. Just to see I set up an appointment on a Dynojet and drove to Nashville Friday afternoon in the rain 
The first pull shifted down into 2nd at 50mph and was aborted. The torque spike looked good though
The second and third pulls were started at 60mph and pulled to 6800rpm so the results were better. The best of the day was 381.4hp and 410.8tq through an unlocked TCI 4400 converter. I'm pretty happy concidering my car has always dynoed low. 
When it was Stock Internal it dynoed 304 hp unlocked through the TCI 4400. So it picked up 77rwhp with just a T-Rex cam.
Here is the graph.
The first pull shifted down into 2nd at 50mph and was aborted. The torque spike looked good though
The second and third pulls were started at 60mph and pulled to 6800rpm so the results were better. The best of the day was 381.4hp and 410.8tq through an unlocked TCI 4400 converter. I'm pretty happy concidering my car has always dynoed low. When it was Stock Internal it dynoed 304 hp unlocked through the TCI 4400. So it picked up 77rwhp with just a T-Rex cam.
Here is the graph.
Thread Starter
Joined: Jan 2003
Posts: 1,455
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From: Fort Worth, TX
The guy that tuned it for me did a really good job. It drives great once it has warmed up. He hasn't gotton the cold start idle down yet because the car has never been sitting long enough to cool down. He has only tuned it one time and that was the day I took it for the dyno tune. I may see if I can leave it with him for a few days so he can get the cold start idle better, but that is kinda hard to do since this is my daily 
Originally Posted by BAIN
The guy that tuned it for me did a really good job. It drives great once it has warmed up. He hasn't gotton the cold start idle down yet because the car has never been sitting long enough to cool down. He has only tuned it one time and that was the day I took it for the dyno tune. I may see if I can leave it with him for a few days so he can get the cold start idle better, but that is kinda hard to do since this is my daily
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Cool man! Glad to see you got it in there and tuned up. Were you running the Trex when you were down at Steele a few weeks ago? The car sounded pretty mild then. There are a couple of local A4 guys here with that same cam in their daily cars 
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Originally Posted by BAIN
Yep I had the cam in then. Like I said Scott did an excellent job tuning it. It also helps that I have 4x9 Magnaflow's on my duals to quieten it down some. 
Like I said Scott did an excellent job tuning it. It also helps that I have 4x9 Magnaflow's on my duals to quieten it down some. 
TECH Resident
Joined: Jun 2003
Posts: 862
Likes: 1
From: Los Angeles, CA
Originally Posted by BAIN
I have 4x9 Magnaflow's on my duals to quieten it down some.
havent heard that one before
is this better flowing or quieter
(or both???)
than the other high flow quiet options
i.e. two-on-the-left, xr1.. ?
Thread Starter
Joined: Jan 2003
Posts: 1,455
Likes: 0
From: Fort Worth, TX
Originally Posted by Stone0fFire
havent heard that one before
is this better flowing or quieter
(or both???)
than the other high flow quiet options
i.e. two-on-the-left, xr1.. ?
is this better flowing or quieter
(or both???)
than the other high flow quiet options
i.e. two-on-the-left, xr1.. ?
Here is a clip of them at idle:
Click here to see Video
Originally Posted by gomer
Let me know the next time you are coming down and I'll check out the exhaust a little closer. I want a true dual setup, but don't want alot of noise.
the magnaflow 4x9 are about as quiet as you will get from what I could find. Video in my sig is with them. They are relatively quiet until I step on it.
Thread Starter
Joined: Jan 2003
Posts: 1,455
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From: Fort Worth, TX
Originally Posted by METALBEAST
Congrats! Looks like your track times are pretty awesome so I would not be too concerned with dyno numbers!
Those times were when my dynoed 345 rwhp. I haven't gotten the new combo figured out yet. 
Originally Posted by BAIN
Those times were when my dynoed 345 rwhp. I haven't gotten the new combo figured out yet. where did you get yours tuned? i live about 1.5 hours from nashville?
Thread Starter
Joined: Jan 2003
Posts: 1,455
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From: Fort Worth, TX
Originally Posted by Brandon
hrmm compition is rising isnt it?
i might haveto get a set of the magnaflows, the twisers are friggin loud!
how are they with drone, etc going down the road?
i might haveto get a set of the magnaflows, the twisers are friggin loud!
how are they with drone, etc going down the road?