Originally Posted by
DrMerl
Good points, I've seen the hook up ability of the new bimmers, impressive. I still consider the TT a FWD car that just so happens to use the rear wheels once in a while, like an old AWD civic wagon. Luckily I get my ya-yas on rolls, only three launches on the counter so far. It kinda sounds like the Supras and 300ZX TTs in the 90s, joke was what's in common with 300HP and 600HP? 12s =) They just weren't made for drag racing.
Have you run into any problems with drive shaft, rear axles or the rear haldex running the 9s?
From your experience does switching to a larger hybrid impact regular drivability? It might make boost a bit later, but is it really noticeable?
My case may not be the best to use because I apparently had a boost leak prior to doing the build so, there's that. But my car has always felt very lazy on the low end compared to my wife's car. Her car is very snappy and has great throttle response in general. Anyhow, I haven't had a single hiccup with the car since getting it back that has been a reliability issue. The only thing to ever pop up was the adjustable Hobbs switch I had on my secondary fuel pump. That was an idiot design choice and I rectified that to prevent it from being a problem in the future. I haven't done too many dig runs but, I do have quite a few 40-185+ pulls. Yes, if you just floor it in gear, it can certainly take a moment for boost to hit and your car to actually do something but, I do have the new RAL file from Darin so, that has been a huge help--not to mention his shift tune to shift at 7800 on the dot every time.
The long pulls I do seem to maintain a bit over half a G during the acceleration all the way up til about 180 so, the car has legs for sure. On the launch, it's a bit over 1G but then I spin pretty bad right when the car shifts to 60 so, there's that, too. Drivability withstanding, I drive it every day for the most part on full E85. I have no qualms about doing so as I really overbuilt the car to handle the power I was looking to make. It is generally more laggy than the stock turbo but, not painfully so. Besides, when the boost hits, it's pretty obscene and you don't necessarily mind the wait. During normal traffic, I just putt around anyhow, and the boost threshold isn't something I spend too much time worrying about. The only thing you need to get used to is modulating your throttle, ironically. If you give it half throttle to suddenly merge into traffic, you'll be going nowhere, then suddenly teleporting and needing to get off of the throttle. The car does seem to get a little upset when that happens, probably because it was ramping up fuel, timing, etc., and you suddenly pop off. But, if you can predict that it's going to do that, then it's much more manageable.
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