LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Predator LS4

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Old 02-12-2009, 04:32 PM
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Default Predator LS4

I know this doesn't belong here but I want one and I know that a used one is SOOOO much cheaper then buying new. I put this in the classif. WTB section and got no responses. If anyone has one I want it.

BTW- To make this a more legit thread how much of a difference did you guys feel with the LS4 when you installed the Performance tune?

Sorry mods if I overstepped my boundries by posting this here.
Old 02-12-2009, 06:50 PM
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What year is your LS4? They only work for 06 Monte/Impala and I believe 05/06 GXP but there is no support for the trans.

Your better off going to Vector Motorsports for a custom tune.
Old 02-12-2009, 07:36 PM
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Mine is an 06 and I don't want a custom tune just a run of the mill pick me up for the grocery getter.
Old 02-12-2009, 08:21 PM
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I have seen that superchips makes a hand held for 06-08 Impala, 06-07 Monte Carlo and 06-08 Grand Prix with the 5.3L. Not sure how good it is. Something to consider.
Old 02-12-2009, 09:24 PM
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Its really not that bad. Since they have fixed the shift points, the car does feel really good. I have yet to get it on the Dyno and upload this tune as I my friend has it on his 08 Impala SS
Old 02-13-2009, 07:02 AM
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Originally Posted by fastLS4
Its really not that bad. Since they have fixed the shift points, the car does feel really good. I have yet to get it on the Dyno and upload this tune as I my friend has it on his 08 Impala SS
Wich one do you have the Superchip?
Old 02-13-2009, 08:42 AM
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I have been using the Superchip right now and it does feel great, but again I have not had a chance to Dyno the car. Since I am selling the car I am not going to go with anything so I thought I would give it a try from my friend.

I can report this after 1200 miles of using it
MPG went up 2.3 total for City and Highway
Powerband feels so much better than stock.
No powerlag @WOT
once superchips got the Point points fixed, the car really screams from 1st to 2nd and into 3rd

Overall, if I was just going to keep this car and drive it the way it should, i would go with his over anything else. If I was going to mod this car, then I would get Vector. But since I am getting rid of it and getting something better, I really do not need anything.
Old 02-13-2009, 11:11 AM
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Are u gonna sell that superchips programer
Old 02-13-2009, 11:31 AM
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Again, its my friends not mine.
Old 02-13-2009, 11:43 AM
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Originally Posted by fastLS4
Its really not that bad. Since they have fixed the shift points, the car does feel really good. I have yet to get it on the Dyno and upload this tune as I my friend has it on his 08 Impala SS
As I read your post, it appears that you and your friend have it? Which one is it? You or Your friend.
Old 02-13-2009, 01:04 PM
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he has it, but I programmed my car as the "test" one. I wanted to post the numbers I saw before I de tune my car and sell it.
Old 02-13-2009, 06:36 PM
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Originally Posted by fastLS4
once superchips got the Point points fixed, the car really screams from 1st to 2nd and into 3rd
Does it adjust shift firmness too?
Old 02-13-2009, 08:00 PM
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Yes it does. You can either have it on the Superchip setting or change it to up to 20psi over factory.
Old 02-14-2009, 08:27 AM
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I just sent my Predator U7191 back to Diablosport. I have a Vector Tune and so my ECM/TCM is locked and the Predator would not work with it. If Diablosport doesn't accept it, I would be happy to sell it to you. I'll let you know.
Old 02-14-2009, 08:35 AM
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I'll take it from you as long it's unlocked.
Old 02-14-2009, 09:49 AM
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If you want a tune and you can make it to this http://www.silveradoss.com/forums/in...51454&hl=zippy I highly recommend it. If you need more info pm me Zippy or allballz57
Old 02-14-2009, 11:10 PM
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I'm thinking about selling my predator. PM me for an offer.




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