Hello all, thank you for your advice, I love reading your posts with problems and performance issues. You guys rule!!
Anyway, I have an 00 convertable that I just put Dynatech headers and high flow cats on. I took it to the track and got virtually the same 1/4 mile times. My best time before was 13.581, after the mods I ran a 13.522....?
When I had the headers put on, I was amazed at how faster it seemed. I had it dyno'ed, with this mod alone, I picked up 13 horse and 23 fp-lbs. I expected more, but oh well. Reguardless, shouldn't that extra power have translated to faster times....
I know you guys are probably assuming more tire spin, but I think my BFG G-force's do pretty good. Plus its an automatic, so I can only screw up soo much... I am no pro with all of this, but given variations of track conditions I cant figure this out. I keep track of the stats on my 1/4 mile printouts, the barometer was 0.38 lower, the temperature was 5 degrees warmer, would humidity make a difference?
Since I have typed this much, I might as well ask one more question. I read about peoples mods and racing times, is there that big a difference in elevation and track location?? I am in Las Vegas. I've done my share of upgrades (I will spare the details) but my car sounds slow compared to cars with the same modifications. My 60 foot times are around 2.1 and I am hitting just over 103 mph. I read about guys that have done less to their vettes than I have and they are running faster times and speeds.
ok, thanks!!

 

Did you just get the headers put on? or was it the full works, headers, high flow cats, x-pipe???

Did you have it tuned also, or just dynoed?? 13RWHP seems low unless it was just headers only?

 

Headers, random tech hi-flow's. I have a corsa indy cat back. LS1 edit with a dyno tune.

 

Wow, I thought that set up is supposed to be around 35HP??
Don't they advertise it as such?

 

Sounds like you a need a 3.73 rear to get the time down more.

 

Your elevation is very different from the east coast.. if i am thinking correctly. I dont know your complete mods, that would help.. and also the fact you have an automatic, is it the 3.15 perf axle? If you can give more info I could help you better maybe.

 

Shoot, I have the 3.15 G92 with no mods and run slightly better times then him with the headers system.

 

your tx hes LV.. if my mind serves me correct his sea level plays a huge factor. If he raced in TX or baltimore, or nj for that matter. I think his times would be around 12.9-13.0

Thats a guess. Like I said I would need more info.

 

Yes I have a 3.15. As far as straight line performance upgrades I have the LS1 edit, K&N cold air induction (the $350 version), a hypertech 160 thermo, I had the throttle body ported. I have the corsa indy exhaust and the dynatech supermaxx headers (with the hi-flow cats and x-pipe). 326 RWHP and 337 max torque at 84 degrees in Las Vegas Nv.
Not sure what else to do to get faster, I have heard bigger cam, torque converter, and different gears. Everyone has an opinion (which I TOTALLY respect) but I dont want to take away too much from the driveablilty. Its a convertable and plenty loud with these headers. BUT I LOVE IT!!
thanks for your intrest

 

Was it tuned before or after the 160 Therm? If before then you need to re-tune, if after then it must be elevation. A colder therm by itself does nothing but dump additional fuel in the system which would equate to poor milage and worse performance.....

 

Before and after the therom

 

can you post all your times (60 ft, 1/8 mile, etc.) this will give us a better idea of what happen along the way.

Do you have stock air intake, because that maybe part of the reason your numbers are low.

I have heard mixed reviews with adding headers. Many state that if you are not doing any other mod (ie cam and heads) then adding the headers is really not worth the money. A better choice would be gears and in your case a torque converter or a stall thingy (not sure of the exact lingo for A4s).

BTW - my best time without headers, xpipe and high flow cats is 12.66. I currently have halltech stinger, GHL cat back and 4.10 gears. I am adding the headers tomorrow (I am adding a cam at the end of the summer) and then will race on Saturday so I can tell you if my times are better or the same then.

 

Ahh.. well from knowing times looking at all times. It has to do with your elevation.

If your car came to a track in Baltimore, or somewhere in NJ. Your car with your mods listed and assuming with the BFG you use. I would say you could safely lower your time by 1 second, even with a 2.1 60'. If you got the 60 under 2, the mods you listed and being an auto. I wouldn't be surprised if you pulled a 12.4-12.5.. Your next mod SHOULD be gears. Put 3.73s in your automatic. Then get your ls1 edit reprogrammed. I think you then could shave another .2 off your 1/4.. hope this helps. I have a friend who lives in similiar elevation as you. However, he also has ran his car in NJ.. He has a mitsubishi evo VIII.. the awd turbo 4 door from mistsu - if you are not familiar. He has a bunch of mods and in NJ he ran 12.70s in his location now in colorado who has smiliar elevation as you.. He run 13.8s 13.9s even.. he is so sad he barely ever runs his car there bc his times are so depressing.

 

I have a K&N intake with the bigger bridge, ect.
ok, here are my times. R/T time was .761 (our track switched to the street lites instead of the tree)(for the import street racers). my 60' was 2.101. 330 was 5.794. 8th mile was 8.775 at 83.05. 1000' was 11.335. Final was 13.522 at 103 mph.
thanks for the advise!!

 

Is this before or after the headers? Either way I need to see the other time slip too.

thanks

 

Reguardless of how well you ran the 1/4, you say it only gave you 13RWHP after the tune......

Shouldn't you have seen something closer to 25-30RWHP??

 

No 3/4 of all the BS you read about systems - whether it be exhaust, headers, tunes, air intakes.. they are all overrated most people never see the gains they claim.. KEYWORD is most! .. I know I have had a bunch of cars with performance mods, and in my import never received 20-30 rwhp from an air intake.. maybe 5 MAYBE MAYBE 10.. the fact is if 1 person achieves something incredible.. they go around spamming it and advertising it like EVERYONE will receive those gains.. its just but we ALL fall for it, and do it anyway.. but hey its fun to say the least

 

Honest truth, I was at 21stCMC and saw them dyno tune a C6 with only exhaust (full exhaust, LTheaders, x-pipe, high flow cats) and they got 30.8RWHP out of it??? (I dont' know what system it was though) I know LG gets some increadible #'s out of his systems too.

 

Not knocking any companies at all.. And I really shouldn't of put tunes in the list of bs stuff.. cause some tuners are just so F*****g amazing they can get insane gains.. but most products you purchase don't get anywhere near what they claim you CAN get

 

I can definately agree with you about that.
Good thing I live 2 blocks from 21st.