Drag Racing Tech - unofficialy slowest ls1

ive only ran my car three times at the track and got a 13.9 and this is at "the worlds fastest track" darlington i have lid,filter,bellow,maf,no cats,hooker lts, flowmastermuffler,10mm wires,tr6, with nitrous got a 13.1 this is a 2002 ws6 the collector edition a4 from the times i see from you guys something is wrong with my car i know i have a little weight from the stereo system but the only other thing i can think is i dont have the o2 simulators on the back spots yet from installing the lts could someone maybe give me an idea what is going on

How are you hooking on the track? 60ft times?


Kim

What's the cars weight, and if you can give us the entire timeslip.

Take off your aftermarket MAF and replace it with the stock...is it the yellow WS6 anniversary edition?

The MAF may be causing trouble, Flowmasters aren't so great, extra weight doesn't help.

Autotap data would help.
Gives us all of the slip data.

yeah im pretty sure im hooking i got the stock f1 but i hook on the street so i know i can on the track here is times
motor nitrous
60= 2.170 2.163
330=5.967 5.810
1/8= 9.040 8.657
1000=11.665 11.096
1/4=13.918 13.144
mph=99.48 110.25
and yeah the ce is yellow yeah i also that about the maf no idea what the car weighs but the weather was bad that day heat and everything but i thought it would still run better than that and thanks for the help

also if i get it tuned then should i leave the aftermarket maf on or just stick with the stock either way

Always run stock MAF ESPECIALLY with nitrous... Descreening the stock MAF is fine.

I would get rid of that flowmaster muffler and put in a dynomax ultraflo. (1000cfm for the 3 inch)
Good luck,
Chris

sounds like you are running on seven cylinders to me. ATAP it. There is probably something seriously wrong with the A/F or timing.

Your 60ft leaves much to be desired. You're running 3.73 gears and the stock converter?

Weather matters MUCH.

Pull the screen on the stock maf and take that aftermarket one off.Better exhaust would help also like the new Corsa systems.

just got the gears havent had money for the converter yet and since i dont have the o2 simulators i didnt see any point in getting it tuned right now also just wanted to make sure that pulling the screen will still be good enough going through the air filter that nothing will flow into the motor

damn bro i think u might be having some tuning issues...you should be seeing a high 12 with that setup(off the bottle)...ur 60' could be better...

...ur MPH is way low...i say ur A/F ratio might be causing this, go get it tuned!

I wonder if he is hitting the 5500 RPM fuel pressure drop that alot of LS1's seem to have. Mine used to feel like I was hitting a 100mph headwind at 5500 RPM. Not all cars have this problem, from what I hear.

Oh yeah, and his 60ft times are horrendous.

"just got the gears havent had money for the converter yet and since i dont have the o2 simulators"

I'm talking about a TQ converter (it transfers the power from you engine to your A4 transmission.) A TQ converter is a FAR more effective mod than gears. Waaaaaaaaaaaay better bang for the buck. O2 sims have nothing to do with a TQ converter. You're thinking about the catalylic (sp?) converters.

no i knew what you were saying. yeah i know what the tc is. i was just saying i didnt have the gears when i was at the track and i was just saying the o2s probably have something to do with some messed up timing or tuning. sorry about that colonel

Lack of O2 simms will not cause a loss of performance in any way. That is a huge but very common misconception. The only thing not having O2 simms causes when you get rid of the cats, is an annoying check engine light in your face.

Do yourself a favor when you get some dough. Make a good converter and some Nitto drag radials your next mods. :burn:

His 2.1 second 60 foot times are better than mine. I spun to a 2.4 second 60 foot and still got a 13.3 at 107 on motor.
Something is not adding up........

just so you know you can have your rear 02's shut off with a tune so you won't even need the simm's

thanks for that cause that just save some money

Something is definitely up with your car. You should auto tap it and I think you need some tuning.

I ran a 13.68 @ 104 at Fayetteville in 90 degree heat and 90% humidity in July with the stock 2.73s and the Loudmouth, SLP lid, and FRA as my only mods. And that was with a 60' slight worse than yours, 2.18s.

I would think with 3.73s, headers, and your other mods you should be running in the high 12s - maybe low 13s in our current heat and humidity.

Heat and humidity will have an effect, but not that extensive. DON'T SPEND ANY MORE MONEY ON MODS UNTIL YOU GET IT TUNED...my 60 times were high 2.0-2.1 and I ran 12.9 on my airlid/short throw/drag radialed SS, there is absolutely no explanation (other than some serious tuning error) for your poor ETs. Get that thing checked out...

BTW, I know it's been said time and time again, your stock MAF flows enough for over 450hp...put it back on. If you descreen it, just keep an eye on it...

i did not have the gears when i went to the track. but im taking your guys advice hitting the dyno saturday and the other day when yall told me to put the stock maf on i went out and did it. i just finished taking the screen off. if i got an a/f gauge would i be able to keep an eye on the juice when sprayed and would it also give me an idea if the maf was giving me any problems?
thanks

Probably not many real low mile cars out there anymore, but most LS1s would pick up some ET and MPH after 'breaking in' and 10,000+ miles on the clock. Is yours still really low mileage?

Other than that, weather can make a big difference (up to 0.3 from 100 & humidity to 65 with no humidity).

Even if you didn't have 3.73s at the time, with 3.23s you should be running better than 13.9 with those mods.

I think you need to get it auto tapped and with the headers, you need tuning probably,

yeah well hopefully i will get it straightened out this weekend. to answer the other question i have a little over 20,000 miles

Do a shift kit dude. That car should see 12's no problem. I am not a tech freak on this matter, but I run a granatelli MAF tuned for N2O all the time even when not spraying. My car ran a 12.71 at 109mph and the tranny would not shift into 3rd for a good 3 seconds. The 4l60E blows ass. If you want to make it fast, get a 3000-3600 stall, and spray if you'd like. Something is definitely wrong. That is a weak 60ft time, but it doesn't add up to your overall ET. Your car is struggling and falling on it's face at higher RPM's. Also try installing a cutout. It will let the car breathe a bit more. No real need to change the catback system.

Do a shift kit dude. That car should see 12's no problem. I am not a tech freak on this matter, but I run a granatelli MAF tuned for N2O all the time even when not spraying. My car ran a 12.71 at 109mph and the tranny would not shift into 3rd for a good 3 seconds. The 4l60E blows ass. If you want to make it fast, get a 3000-3600 stall, and spray if you'd like. Something is definitely wrong. That is a weak 60ft time, but it doesn't add up to your overall ET. Your car is struggling and falling on it's face at higher RPM's. Also try installing a cutout. It will let the car breathe a bit more. No real need to change the catback system.




Totally disregard the above post. That is bad info and it'll lead you astray. Listen to the Colonel. A-tap you car, get a converter, and ET Streets.

How in the world is a shift kit going to drop 1 full second? :eyes: Make sure you go back to the stock MAF.

I never said it would drop 1 sec. I agree to autotap the car. I disagree with the ET streets. The car is not having a traction problem after the 60ft mark with an A4. He has a decent 60ft time to be on street tires. Listen, the slicks will not help your problem. You'll still be in the 13's no doubt. Your car is not pulling hard enough in the higher RPM's. Take off is not the problem. You should still install a cutout. Flowmasters suck. You don't want to put this extra restriction on an LS1 with LT's and intake work done. All the Flowmaster is doing is choking the motor. You should not worry about slicks until you are in the mid to high 12's range first on street tires. Then you know the time will improve. Before anything else, auto-tap the car and install a cutout.