[BiturboS4] Rumor(s) Behind The New S4
jysap at cs.com
jysap at cs.com
Thu Sep 26 19:59:22 EDT 2002
good points - but the NEW RS6 - has the BEST of both worlds - it's a Biturbo & V8.
I would MUCH prefer to have a V8 turbo. Problem is: Audi has priced it away from much of the existing S4 crowd.
Thus, all things considered, I will still stick with a modded 2.7TT from minimal $$$ out of pocket perspective. Like I said be4, the new S4 from a pure performance perspective does not give me that much more than modding my S4.
Due to the competitive nature between BMW and Audi, it makes sense to wait for the BMW M3 (8 cyl) and REALLY get superior performance over the 2.7T, in my opinion.
just my $.02
"Chip Goetzinger" <chip at auguricorp.com> wrote:
>One point you anti-V8 folks seem to keep making is that the 2.7TT is a
>superior engine to the V8 because you can add more boost, upgrade turbos
>etc. I would like to posit the opposing viewpoint which is this: a V8 IS
>in many ways a superior performance engine to a V6TT. Why? First, if you
>are really into performance and do things like open-tracking (particularly
>in warm environments), a N/A vehicle is far more reliable and consistent
>than a TT vehicle. Turbos run quite hot, and this heat must be dissipated
>to keep the car performing well. N/A V8s don't "heat soak" the way turbo
>cars do. V8s don't require the careful care that turbos do in terms of
>cooldown after a run. V8s don't blow turbos. Simply, given the same power
>output, a 4.2L engine is just far less stressed than a 2.7L engine, and the
>components will live longer.
>In power terms, sure, you can chip a V6TT and get some quick boost gain -
>but at that point you've merely caught up with the V8 (and probably have
>better TQ). However, a V8 has no turbo lag, no non-linear throttle response
>to upset you in a corner, and no off-boost soft spots, nor does it slow down
>as the day progresses due to heat-soaked intercoolers. V8s can be modified
>too, and then what does the V6TT owner do? More boost? Bigger turbos?
>Should you be one of those folks who wants LOTS of performance (like a K04
>type in the turbo world), you can ADD forced induction to a V8 (for roughly
>the same price as a turbo upgrade on the V6TT). Ask me how I know. ;o) At
>this point, you will have a forced V8 competing with a forced V6, and the
>advantage is clear. Simply put, you can add boost to anything, but it's
>much harder to add displacement and impossible to add cylinders.
>So - my point is that when talking V8 vs V6TT performance, I know we all
>love our 2.7TTs, but that doesn't mean there aren't advantages to a V8.
>Stock vs. stock, the V8 wins. As you add mod dollars, the V6TT is initially
>more attractive, since you can gain boost quickly with a chip etc.
>(remember, though, that much of that quick gain is simply catching up to the
>V8s stock performance), but once you get to the limit of the stock turbos
>(which is not very far past the stock V8 performance), the advantage quickly
>goes back to the V8, and the V8 has the higher ultimate power capability
>simply due to size (see RS6).
>'96 Mustang Cobra Convertible - 435 RWHP (Laser Red, Saddle, Saddle - shhh,
>'02 Audi S4 6-speed (Santorin/Onyx/Silver Alcantara sport)
>'02 Nissan Xterra XE-SC 4x4 AT (Black)
More information about the Biturbos4