HottLS1Z

iTrader: (5)

So took my 98 m6 TA to the track today and it trapped 107 for all 4 passes. This seems low to me for the mods. 151k on the car. Mods are:

Edlebrock stepped long tubes and ORY Magnaflow catback and cut out
BBK intake with 85MM tb SLP lid with K&N filter and bellow and Ram air
Spec clutch and 390 gear and an ASP underdrive pulley
Taylor 10.5 Wires and NGK plugs
MGW shifter
Free mods
Car is on 17&18: Zo6 rims and fire stone firehawk indy 500 wide ovals. Race weight around 3750ish

Trap speed was between 107.20 and 107.80 for all 4 passes. Times were between 13.3-13.1 with 60' between 2.1 and 2.0. After getting used to the setup (first time with this one at track) I got the 60' down to 1.89 but something didnt work and it didnt record the 1/4 time or mph. I'll post the exact times later whne I have the slip on me.

I remember my old 98 a4 Z going 13.4-13.5 @104-105 years ago bone stock so I think with these mods and an m6 it should be trapping around 110-112? I drove my friends 01SS m6 a few years ago for him and with just an FIPK I got it to go 13.1@108 so whats up? Any ideas? I think it should be closer to 12.7-12.8's around 110-112? Route 66 was the track whatever the da is there. Opinions?

HottLS1Z

iTrader: (5)

45 views n no opinions huh....weird

GtoSpd

iTrader: (2)

I had an 98 with full bolt-ons, stall, gear, and a good tune. Went 12.7 at 109 on a 1.78 60'. Then my 01 SS is running the ET in my sig....heads, intake mani?

jtsta02

iTrader: (1)

yea, i think it sounds low.

have you had it tuned, what was the rwhp and the weight?

HottLS1Z

iTrader: (5)

Any auto with a stall is always going to run a faster pass then a manual kinda needs a stick car to compare too I think...

HottLS1Z

iTrader: (5)

No, stock tune. Had a hpp3 sitting around from years ago, tried that it did absolutely nothing.....exactly as expected. Well at least it calibrates my speed for the gear huh haha

WhiteKnight '01

With those mods I would highly recommend a tune.

I have seen A4 LS1's with 2.73's, a lid, cat-back, and most importantly TUNE running in the high 12's.

I would take it to a dyno, check the WHP you're putting out. And next, get that thing tuned.

Are you spinning much off the line?

HottLS1Z

iTrader: (5)

Not really spinning more it bogged some. Got a nice launch once found a sweet spot but the timer messed up and didn't display the time or speed but the 60' was 1.89 where best was 2.0 for the 13.1 pass. As for tune I may Dyno it, but plan to Turbo it soon so no real point in tuning until then IMO.

WhiteKnight '01

You are going to turbo a car with over 150,000 miles on it? Good luck.

WhiteKnight '01

For what it's worth, I would be adding an LS6 intake to that car also.

heymoej

iTrader: (67)

my 2000 SS M6 went 12.1 @ 114 mph if i remember right.......with terrible 2.? 60'

it had nittos,410 gears,ls6 intake,underdrive pulley,headers & ory-pipe.

but it had under ten thousand miles at the time.......

HottLS1Z

iTrader: (5)

Yup...never said with this motor tho....

HottLS1Z

iTrader: (5)

Had ls6 with ported stock TB....swapped to bbk 85 and 85mm TB....felt better. Also it'll work better with fi.

HottLS1Z

iTrader: (5)

But at what weight and what h/c? I've had 5 of these cars I know they won't run that on just bolt ones stock weight....and espically with a 10 bolt.....if you were all stock h/c and 10 bolt stock weight well that's a freak!

Goat2NV

iTrader: (19)

I did the same thing a few years ago, I swapped my stock LS1 intake out in search of ET and the BBK slowed my car up 3 tenths. I was consistantly in the 12.7-12.8 range and the intake slowed the car up to 13.0-13.1 We adjusted the tune for the intake it never picked up, swapped the LS1 back on and back to the 12s the car went. I experienced the same thing as you though it felt stronger on the street but the track results told the story. So you might want to look into an LS1 for comparison sake.

BOLO

iTrader: (40)

151K....I would do a leak down test on the compression for a start and go from there.

juSStin4171

iTrader: (2)

I went 13.5 @ 105.5 mph in a 2001 SS with SLP FLOW PAC, 1 3/4 kooks headers and GMMG on fresh-ish GS D3's. It's a 01 so it has the LS6 intake I can't remember what the 60' was, but it wasn't great. It was my very first pass on a track. The car is a 6 speed stock clutch at the time and about 40k on the clock. I don't think you're too far off from that. Mods are similar as well.

HottLS1Z

iTrader: (5)

Reeeaallllyyyyyy.....Very interesting....Were you running the the LS1 or LS6 intake? That is VERY strange if you gained from the LS1....

HottLS1Z

iTrader: (5)

Not a bad idea actually....I never had a motor with bad conpression before or any of that, wouldnt there be some symptoms or something?

Hmm, ya know I'm wondering it its the rims. I have a couple friends who told me the big 18" rims in the rear and 17's up front because its heavy rotating mass, and not just regular extra weight that it can hurt more then one would think I guess.

HottLS1Z

iTrader: (5)

Oh also I tried running it with the cut out open and closed, made 0 difference in mph or ET. Some people may find that interesting...