Date: Sun, 04 Nov 2001 23:41:17 GMT From: Just Bob <uctraingnopsamanet.com> Subject: Re: 2.0 LPT tuning kit
On Sun, 04 Nov 2001 18:03:29 +0000, H. <musicboxnopsamrider.co.uk> wrote: >JD, I posted a message about this a week or two ago, as I was thinking >of it, and wanted any opinions! >Fromm Saab UK, the kit costs about £800ish, fully fitted. However, >I've been looking into it a bit further, and whilst the maximum torque >figure rises, it also moves from 1800rpm, to 3600rpm.... not so good. > This is a little of a fudge on Saab's part. I drive a US spec 2.0 with 185HP stock. There's little torque below 2500 RPM until the turbo starts pumping. I read a write up one time from someone who accounted for how Saab does their dyno test and how they come up with such a low RPM for max torque even though the engine does not pump much at those RPMS. I forget the details, but it was clear that the max torque was not really developed that low in real life conditions. One of the problems with the stock (2.0/185hp) setup is that the ECU opens the wastegate as soon as you open the throttle. This is done to provide a smoother response for the 'average' driver. But, by delaying the opening of the wastegate via a change (kit) to the ECU or by using a manual boost controller, the so called turbo lag is substantially reduced and the car moves out much more quickly. But, it is a little touchier - push the gas and you go when you are at speed on the road. So, you get a practical and serious boost where you need it. Many of the ECU kits do this for you -I don't know that the Saab factory kit would. -- Bob United We Stand
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