Hey guys,

Well one of the things I really enjoy about racing is to see what effect my mods have on the car each time. I know I'm not the fastest, but we all don't have access to a dyno in our backyards every day so I hope this will be a somewhat beneficial thread to update to see the effect each mod has on performance.

I first took the car out in April when it was stock (only a SSK and B&M - hardly worth mentioning). Temps were 50 degrees, running VP109, and my best of the day was 12.76 @ 111.77 with highest trap of 113.38 (average 12.91 @ 111.75).

Went back to the track yesterday and got in 13 runs. Finally got the launch down, and pulled off a couple 1.8-1.9's. First 5 runs I stood on the brakes at the traps because I was told if I went over 100 I would have to get a helmet (it's still in the mail). On my 6th run I just said screw it and went full-throttle, and didn't get kicked out. The 996TT was kind of a novelty there as most of the other cars were POS Vauxhalls running 16's, so they let me stay and rip off some good runs. Way different than in the US fellas, the only thing that came close to me all day was the jet car running 6.6x @ 260-something. They made him wear a helmet.

Mods since last time are full 3" straight through exhaust w/ 100 cell race cats, AP IC pipes and BOV. MAF is fried. Temps were in the upper-70's, and I was running BP102 (RON) gas. Best time and trap of the day was on a 12.48 @ 113.17 w/ 1.94 60' time. Ran with tire pressure of 25psi all around and it made a big difference in the launch (best 60' was 1.88). Averaged 12.67 @ 112.62.

So I put all of my numbers on a spreadsheet and analyzed them (old habit). No real gain to speak of in my final MPH numbers, although the average is slightly higher (111.65 vs 112.79). The real interesting figure is that I picked up over 2mph average in the 1/8th - 86.96 vs 89.02. Also my 330-660 is where I made up the most ground (aside from my launch). Exactly the opposite of what I was expecting with the new exhaust. I was expecting to lose a little torque while gaining top-end power.

So here are some pics from the day and my timeslip (Scott, is this good enough to get me up on "the list" ). All-in-all a good day, and I'm learning more about this car all the time. Next time out I'll have ECU programming and more fuel delivery/boost, and a new MAF.

 

Nice photos and good times.

No helmet law at the track in the UK?

 

Only if you run over 100. For whatever reason they didn't flag me. All of the track officials I talked to were just pretty amused with me destroying everything on my runs. Like I said, not a lot of fast 1/4 mile cars out here.

 

Great job, Jimmer. It's great to see that you're getting out and enjoying our car. Great pics, too!

You're now on the "official" list.

 

Great, thanks! I would have been embarassed about asking until I beat Luis in his stock GT3.

 

great thread... now what's this NO helmet business about lol!

 

LOL, thanks Sharky. Safety first!

What's up with my trap speed? Shouldn't I be seeing 116's stock? What about 1/8 mph, is 89 about right? Maybe a leakdown/compression test is in order. Anyway, I'm hooking up a real boost gauge next week so I might get some answers from that...

 

What mods is needed to get a 996 TT in the low 11's ? Will K24 with exhaust, ecu flash , diverter valves and so on be enough or is bigger turbos needed ?
Nice pics.... and a good effort, keep it up.

 

Good idea to wear a helmet no matter what. If you don;t have a map for it then the VP109 may hurt your performance.

 

I have K16-s, alltunig chip, straight pipes and new diverter valves, and 11.804@118mph
http://wirx.ee/porsche/quartermile/11.804.jpg
But it need really fast shifting and good 60ft.

Jimmer if u but more pressure on tires u will get higher mph-s
And is this track glued? if yes, then 113mph is OK result for glued track...
If u don't have race file, then is no need to use race fuel it doesn't give u anything
996TT with standard wheels and tires has 1->2 gear change exactly on 60ft(mine does) so there isn't always true that 60ft time bettering 0.1sec give u 0.2sec better ET...sometime u change first gear to second @ 60ft and u get badder 60ft, but better ET...


Grat pics and rims btw (Y)

 

Cool pictures, nice black TT with Aero Kit!

Mid 11's are tough, not many get there without full blown
bolt ons.
Good luck and thanks for sharing

MK

 

Nice job and great car! But there is something really wrong with your car, they put the steering wheel on the wrong side!

Looks wierd to see them on the right!

 

Believe me Buddy, it's even harder to relearn on the "wrong" side. Not so much driving on the wrong side, but sitting there your depth perception you've always known gets all screwed up (shifting isn't so bad tho). My rims had to be redone because I curbed them ALL within the first week of owning it! LOL!

Thanks for all the great comments guys. Next time 11's for sure!

 

Sounds like you had a blast! Did your clutch show any signs of getting tired after 13 runs?

Jeff

 

How are you guys launching the TT? 2.8k rpm and slipping the clutch out fast? PSM on or off?