NAVY99B4C

iTrader: (7)

I put my car on the dyno to tune it. long story short. 315hp 316tq. with tune!? wtf? whats the deal i was expecting more than that. i watched my buddys stock 01 T/A put down 307 at the wheels! although his was an m6 and mine is an a4 would there be that much dif? im reading where cam only cars with simalar bolt ons are making 350-380? my car runs strong im not let down just wondering if there is more and i just cant figure out what im doing wrong here?

mods.

k&n filter
slp lid
no screen maf
p&p tb
rebuilt stock ls1 heads(milled .012)
melling hp/hv oil pump
vinci cam. 278/286 @551
ebay lts, custom Y, flomaster
tuned by GM engineer with hp tuners

i realize im short an intake and tb but should i be making more power or am i where i should be? just wanting some input before i tear it down this winter.
thanks. chad

any ideas????

03EBZ06

I generally don't think much of dyno numbers until I see MPH to back them up in the 1/4. What happened at the track? Maybe needs a little tuning.

NAVY99B4C

iTrader: (7)

went 12.98 at 108 with a 2.0 60ft on stock street tires. basiclly what a damn stock ls1 car can do. that was before gears but it still sucked.

Haans249

iTrader: (24)

Kill the flowmaster. I gained +70rwhp and +80rwtrq with a bypass of the slowmaster exhaust.

MikeG

iTrader: (33)

Do a compression check on your rebuilt motor.

tnmotown

iTrader: (107)

yeah dont let the dyno numbers fool you. I dyno'd at 383rwhp and thought i should have a little more but still trapped 119mph in the 1/4. Runs like a wild ape if you ask me! lol

What kind of dyno was it also?

Haans249

iTrader: (24)

What springs are you running?

matt1289

70rwhp? and 80 rwtrq? really? I just don't by that, did you mean 7rwhp and 8 rwtrq?

Cliff

iTrader: (19)

The flomaster is the problem. Put a cut out on it or put a different muffler and your power will be where it should be.

KingSS

iTrader: (1)

flowmaster is bad, get a cutout and see what happens.

lemons12

iTrader: (71)

!!!!!!!!

That is NOT what a stock ls1 can do.. Especially not an auto..

You have a good mph, get a set of tires to bring that sixty down and you will be in mid 12s easy.. Add a cutout while you are at it, 30 bucks won't hurt.

You are reading into dyno numbers way too much..

NAVY99B4C

iTrader: (7)

MikeG.

i never said i had a rebuilt motor? it has the stock 170k mile bottom end in it so id rather not. good eye on the rebuild i didnt do though.

Hanns249.

valve springs what your wanting? and 70hp and 80tq? those real numbers just killing the flow?

tnmotown.

is a dyno jet dyno.

ill be cutting it off tonight. it did feel faster when i didnt have that muffler on there but ill strap it back down after i cut it off. it was just so damn loud when it was just straights. i guess id rather just have some better numbers but then again now with my dr's and 4.10s i could probly cut some better times.

NAVY99B4C

iTrader: (7)

i dont much care about dyno numbers either i just like to be the fastest i can. in case i run into someone out there you know

MikeG

iTrader: (33)

Whoops...sorry, rebuilt heads. Well my compression check recommendation is even more worthwhile if you have a 170k mile bottom end...

NAVY99B4C

iTrader: (7)

haha yea i should but with 170k miles im not sure i even want to know. ill be tearing it down this winter anyway for a full refresh and some other go fast parts.

Keith_Shapiro

iTrader: (1)

im still pondering this +70/+80 gain.......im saying bulllllllllllllshhhhhhhhhhhhhhhh... hopefully that was a typo

formulaon18s

My BONE STOCK down to paper air filter ran 13.1 at 108 with a 2.1 60'. Only ran down the track twice while stock two weeks after I bought it, Im sure with more practice it would have ran 12.8x.

Slowhawk

iTrader: (12)

There are alot of variables.

The inlet system? Was the TB 100% open?Air filter clean?Stock intake hurts alittle.

Exhaust -says custom Y-pipe,that could be a restriction.The Flowmaster is definitely a restriction.

Was the tranny locked?

s346k

iTrader: (4)

everyone is saying the flowmaster is a restriction..yeah i believe so, but not on such a mildly modified car - it has another problem.

have you done a compression test yet? have you gone through the simple things? o2s, maf, tb opening all the way..?

fwiw my wife's 99 m6 ta went 108-109 with a lid and weld in 80 series only. full weight car in central indiana, nothing special. and she was driving...the muffler is not costing him 8 mph.

lemons12

iTrader: (71)

You both are talking about 6 speeds... His mph for an auto shows his car has faster than a 12.9 in it. Who says he should be trapping 115mph?

I forget sometimes everyone runs in the same DA with a VERY strong car and not all setups run the same thing.
I apologize.