LS12Fast4U

iTrader: (1)

Hey guys i want to know what your opinions are on my HP and TQ when i get dynoed next Monday. Where do you think i will be? Im hoping for 350 to the wheels.

The set up so far is K&N CAI, BBK 80mm TB, Pacestter LTs, Stock cats, X pipe.

Im getting it tuned also while its there.

Thanks for your feed back.

batboy

iTrader: (6)

M6 will dyno higher than A4. What brand dyno? Dynojet will give you a higher number than a Mustang. With a M6 you should be close, maybe 330-340 HP. If you have an auto, you're gonna be really disappointed.

LS12Fast4U

iTrader: (1)

my car is a M6. what other mods should I do to get to my goal

Slo4

Underdrive pulley would give you a few hp if you want to stick with bolt ons. Replace the stock cats with high flows will also make a difference.

v8

iTrader: (10)

with the same mods except I have an u/d pulley I put down 344/357 Good luck

I forgot to add I tuned it for 12.5 afr, if they tune it for a 13.0 it will be higher.

LS12Fast4U

iTrader: (1)

I have high flow cats on it already. I did it when i did the headers. I also did an X pipe but i think im going to go to an H pipe because the X is a little raspy.

batboy

iTrader: (6)

Yeah, an underdrive pulley will free up another 8-10 HP. If you ever plan on doing a cam change, that's the perfect time to do the UD pulley. Not a lot of bolt-ons left other than a FAST 92 intake manifold and bigger TB (but that's expensive). A full catback might be good for another 5 HP, but that's not a good bang for the buck.

Silver Rocket

get yourself a ported fast intake its like 1100 bux but you will see 20-30 rwhp out of it

you should be around 330-340 i dont see you makeing much more than that with a ls1 even with a great tune

LS12Fast4U

iTrader: (1)

If i was going to spend 1100 bucks i would just do the cam swap. Also i dont see the FAST manifold giving me an extra 20-30 rwhp over an LS6 manifold. Maybe like 10 rwhp. I would really like to get a cam but i cant convince my wife to let me get it. I have to find a good priced one on here or something.

batboy

iTrader: (6)

I switched my stock manifold to a FAST 78 and gained 10 HP. Then I went to a ported FAST 90 and gained another 17 HP and a bunch of torque.

Silver Rocket

proof is in the pudding

and his wasnt even ported


but you are correct over a ls6 intake you will only see about 10 to 15 if you are lucky...i thought you were running stock

Melloyellow04

iTrader: (3)

04 GTO's came stock with an LS6 Intake...

LS12Fast4U

iTrader: (1)

Yeah thats what i was saying. I already have the LS6 intake so it didnt make sense to me to spend a grand on a FAST intake only to gain another 10 HP. I was saying if i wanted to spend a grand i would spend it on a cam swap and gain roughly 30 HP.

batboy

iTrader: (6)

The ported FAST 90 ended up gaining about 27 HP on my 2004 LS1. But, I admit, it's not a big bang for the buck like a cam swap would be. I thought you wanted to know about other bolt-ons, that's why I mentioned it.

So, dyno results???

rcsfastmonte

iTrader: (1)

just put a ls2 intake on it and enjoy the extra cash,more power less money. you really want a bang for the buck bolt on some nitrous,cheapiest HP you can buy.

LS12Fast4U

iTrader: (1)

Dyno is tomorrow!!!! Im hoping for at least 340 HP and TQ.

Fatbum

iTrader: (1)

LS2 Intakes flow worse then the LS6 intakes.

LEO

iTrader: (3)

So what did it dyno?

nmcqueen469

iTrader: (24)

WTF are you talking about? Lot of dumb **** floating around in the GTO section right now........

MyFirstLS1

iTrader: (8)

interested to see what it does. i got 332/343 with whats in my sig. pretty clsoe to what you got cept the t/b