OUT2WIN

I'm wanting to get this car in the 10s. I bought it last fall and ran it a few times. My slip is as follows. I was on the right.


My mods are A&A V3Si at 8 lbs of boost, kooks longtube headers, kooks high flow cats, Corsa sport exhaust, A&A stage 3 cam 228/236, and tuned on the dyno. It made 586 on a dyno dynamics and close to 620 on a dynojet. The few trips down the 1320 have been on factory tires in 70-80 degree weather.

I want to add more boost but I am already at 90% injector duty cycle. I am looking at running hoosiers at the next track outing. One of our local shops that has some wicked corvettes will be doing a tq converter as soon as I can swing it. I want to run 10s this season.

How much more boost can I get away with to trap in the 130s?

old motorhead

You should be trapping 130's NOW.

OUT2WIN

I thought so too.

I hate to bench race but my younger brother's C6Z has an A&A with headers as well and he dynoed 620ish and traps 133 on stock 19x12 wheels with 345 Nitto NT05R. One of my passes was with him next to me and I caught him sleeping, plus my 60' was a little better and he blew by me by the 1/8.

Pitufina

I agree with the previous posts. There's something wrong since I trapped 123-124 when my car was cam and exhaust only in non stellar weather plus bogging off the line. Now that I'm supercharged I would expect no less than 128-129 through the traps in bad weather and about 132+ in good weather.

Do you live in a high altitude area?

OUT2WIN

I've been told that the tune is real conservative so I may just get it tuned by the shop that will be doing the future mods anyways. I would like to get the best out of this setup before I throw more mods at it though.

Here's the temps ad DA from the day I ran it. The runs were between noon and 3 o'clock

Pitufina

That DA is not good for mph. Even with a very conservative tune I would think that you will at least be in the high 120s since the 60ft aren't that bad considering you are using the RFs. Did you leave off idle I imagine? I bet that with only drag radials and brake torque with the stock converter you will run in the 10s and your mph will go up. With a better DA you will be running solidly in the 10's at 130mph+

Streetk14

Hmmm.... I ran similar times in my old '08 LS3/MZ6 car when it was just a cam/header/intake setup. Ran a handful of 11.6x passes at 123-124 at the one private rental I ran at. I was on drag radials but it was being babied out of the hole as I really wanted to be able to drive the 2 1/2 hours back home.

The slip I easily found right now shows:

60': 1.82
1/8: 7.611 @ 96.78
1/4: 11.635 @ 123.15

Looking at dragtimes data, it was around 1000 ft. DA for this pass. So that's an advantage, but for a cam/blower car, that MPH just seems low. My car was making less than 460 rwhp at this time.

winters97gt

With just an SI blower, no headers, stock cam on my LS3 I was running mid 10's at 135-136. Probably could have gone 10.3 if I had seat time but the track officials gave me 1 run and done and finally wouldn't let me run. That's with a stick and 600hp. Something's not right.

nightster

Thing rolled out! What tires were you on?

winters97gt

Thanks. Just 275/40-17 drag radials. Great size tire for 450-650/700hp vettes.

OUT2WIN

Where do you guys think the problem is? I had it data logged on the dyno but I didn't get no negative feedback from the owner of the shop. Maybe it's in the tranny tune? Or lack there of........

winters97gt

I think it's the tune/tranny. At 560-570hp on skinny 19 inch runcraps, I made one pass just because I was at the track and my friends were egging me on. I bought the car 2 weeks prior and picked it up that Friday from the shop with a blower. Went strait to the track to watch friends. I babied the car out to keep it from going in to the wall. It still trapped like 128-130 not getting in to full boost till 3rd gear, since it was brand new to me. So I'll say it's all in the tune.

OUT2WIN

I hear nothing but good things about the tuner.

winters97gt

Tuning an A6 and a M6 are worlds apart.

Who's your tuner?

OUT2WIN

It was tuned by Tom Wong at Wong Performance. I am in no way bashing his tuning.

monsta01

Was gonna say the same thing.

Pitufina

Does the engine runs fine? I would check all the clamps, change the spark plugs, check the spark plug cables, vacuum hoses, clean the maf, etc. I think you get what I'm saying. Sometimes little details like this will eat you alive. Also do you have a way to monitor boost and fuel pressure?

OUT2WIN

I have purchased an air/fuel ratio gauge and boost gauge and will install them before I go back out next time. I'm thinking of also purchasing HPTuners at this point so I can data log on my own.

OUT2WIN

Whoa!! 600 rwhp without cam and exhaust mods 3.8 pulley?

MikePD

trans tune!!!! not to many can tune the 6l80..soo look intoo that also.. what injectors are you running? pulley it up