dr jim

iTrader: (1)

Wonder if any of you guys could give me some advice how to get a bit more power out of my97 turbo uk scoob car. Currently has scoobysport downpipe, std center ,magnex rear box, Dawes device set at 15psi held in 4th gear and a K&N panel filter. The car goes really well from 2500rpm to 4500rpm with a good shove in the seat but power tails off at 4500rpm just looking to see what is the best way to.
1. Make it pull harder
2. More power from 4500rpm to redline
3. Less sluggish below 2500 rpm
Cheers in advance for any help

Andy McCord

Tek3 remap

edited to say didnt look at MY97 sorry its not an option

[Edited by Andy McCord - 1/8/2004 5:53:18 PM]

dr jim

iTrader: (1)

Anyone?

greasemonkey

There's little point going for a "bit" more power. Any increase over what you've currently got is likely to cost a bit, and once you accept that you're going to have to shell out a bit, there's little point spending money on an increase you'll barely notice.

[quote] just looking to see what is the best way to.
1. Make it pull harder
You don't want much, do you? More up top and more at bottom is going to be very difficult to achieve without major hardware changes.

The TD04 already spools very quickly. Seeing as you've already decatted, about the only way you'll get the boost to build even earlier would be to run some sort of anti-lag strategy, or go for a larger displacement engine, at considerable cost.

Your usable powerband should really go a bit higher than 4.5Krpm, so some messing about with the Dawes may help a bit there, but even in the best circumstances you won't get a TD04 to deliver all the way up to the red line, as it's simply too small and flow-limited.

Thus, if you're really keen on getting more at the top, you're looking at a bigger turbo, which works against your goal of increasing response at low engine speeds. Better intercooler would help too.

Decisions, decisions...

dr jim

iTrader: (1)

Maybe i just stick to a bit more at the top then
any surgestions then

greasemonkey

When you say the power's tailing off at around 4500, what's happening to the boost, is that starting to tail off at the same engine speed, or what?

What sort of boost pressure are you getting at 5500?

matty01

I notice you have a standard centre section ,replacement of this will give better high rpm power for sure,top end is strangled by the cat (or resonator box if that is what your ctr section has ...)

dr jim

iTrader: (1)

boost staying at 15psi to the redline
just after a bit more top end power and pull harder after 4500rpm

[Edited by dr jim - 1/8/2004 8:48:02 PM]

[Edited by dr jim - 1/8/2004 9:20:36 PM]

dr jim

iTrader: (1)

is that right about the std center section strangeling top end power because i also have a magnex center section with a center box but did not notice any power diffrence so i put the std center section back on. So will my car pull harder with a straight through center section? Maybe more noise at the same time

dr jim

iTrader: (1)

anyone?

Scoty

[Edited by Scoty - 1/9/2004 11:02:16 AM]

milo

i would do this if i were u:

* decat centre section
* bigger turbo (td-05), bigger injectors, uprated fuel pump
* fmic (or cut this step out if it'll cost too much)
* ecu remap (link?)

The_Judge

Your cheapest option (but not necessarily the safest) is to get a Fuel Cut Defender (HKS for instance £90+VAT), raise the fuel cut to say 19psi, then raise the boost pressure on your Dawes to say 17psi. A Knocklink would be an extremely good idea as well, if you haven't already got one. Octane booster may help also. Then get the car wired up to a select monitor, to check the AFR and ignition is OK...

[Edited by The_Judge - 1/9/2004 6:01:36 PM]