[200q20v] (no subject)
brett at cloud9.net
Sun Jan 20 16:12:09 EST 2002
At 6:50 AM -0800 1/20/02, Neil Swanson wrote:
>It seemed as if you were saying there is no advantage to a turbo upgrade.
Nope, I meant there is little point to the turbo upgrade, if you
don't alter the ECU to take advantage of it(looking back at my email,
I didn't do a very good job of saying this.) I also initially forgot
he already had a mod done to the ECU as evidenced by my comment about
a $500 chip being more cost effective(he's already got the chip,
duuuh.) I think the brain was on vacation, hope this clears up what
I was trying to say.
>Add the RS2 turbo. If all boost mapping stayed the same as for a
>K24 then HP would be nearly the same. But the RS2 will produce
>cooler denser air charge. That equals HP and torque.
I should have mentioned that a larger turbo would be more efficient,
absolutely. No chip needed for this of course.
Is that HP and torque from a slightly cooler charge(remember, you can
only become so efficient, there MUST be a temperature rise when you
compress the air) worth the $1500+ price tag? I don't think so, but
can't say from personal experience.
It can't cost more than $200-300 to get the ECU switched to one that
takes advantage of the RS2. Would that be worth it? Much more so.
>You do of course loose some low speed response but this is expected
>and not news.
And if you keep the ECU the same, I'd argue this devalues the "just
the RS2 turbo" upgrade. The 20vt's have a small turbo for a
reason...quick spoolup, and its one of the things I enjoy the most
about the 3B. Remember, our car was supposed to be a "v8 killer"
going up against the 7-series and S line of mercs.
One of the chief complaints in a review of the RS2(done on the Isle
of Mann) was that it "took forever" to get into its range(but when it
>I'm sure Ned can do an ECU mod to take into account the extra air flow.
Well, yeah, extra air flow capabilities of the bigger turbo. MAF
sensor(up to a point) handles accounting for air flow :-)
"They that give up essential liberty to obtain temporary
safety deserve neither liberty nor safety." - Ben Franklin
http://www.users.cloud9.net/~brett/bdikeman.asc (PGP Public Key)
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