Boys with P1`s and downpipes.
#31
Andy W,
Answering your Q re what M.Y was my car...
It was a P1. Brand New, fitted with the SS down pipe, before I took delivery.
If I want the cat back I'll probably go via the PE route with centre section & cat.
Detting? what detting?
Simon
Answering your Q re what M.Y was my car...
It was a P1. Brand New, fitted with the SS down pipe, before I took delivery.
If I want the cat back I'll probably go via the PE route with centre section & cat.
Detting? what detting?
Simon
#32
I am reminded that by looking at the dyno site that I can substantiate Pats comments from my own experience.
I did second run to the one shown, with all things the same (as can be) and simply increased the advance by 1 deg across the (peak boost) range, peak torque increased from 256lb ft to 264lb ft (Paul Strong has the graphs but has not overlaid them as we were waiting for the d/p reading). So a relatively small change in timing and a big change in torque.
So any det will significantly reduce potential torque and power.
Since then I have fitted a downpipe, and although I have not proven this on a rolling road, performance figures have improved considerably. I suspect this is both an increase in torque, and also the fact the the peak boost now comes in at 3100rpm, with 1 bar available from 2700rpm - so even if the curve is not higher (264 is already pretty good for Scoob) the area under the curve is much larger!
So no detting AND a downpipe is thoroughly recommended.
Out of interest I fitted a BPM twin dump.
Cheers,
R
I did second run to the one shown, with all things the same (as can be) and simply increased the advance by 1 deg across the (peak boost) range, peak torque increased from 256lb ft to 264lb ft (Paul Strong has the graphs but has not overlaid them as we were waiting for the d/p reading). So a relatively small change in timing and a big change in torque.
So any det will significantly reduce potential torque and power.
Since then I have fitted a downpipe, and although I have not proven this on a rolling road, performance figures have improved considerably. I suspect this is both an increase in torque, and also the fact the the peak boost now comes in at 3100rpm, with 1 bar available from 2700rpm - so even if the curve is not higher (264 is already pretty good for Scoob) the area under the curve is much larger!
So no detting AND a downpipe is thoroughly recommended.
Out of interest I fitted a BPM twin dump.
Cheers,
R
#34
I've a PPP'ed my00 - then fitted a decat d/p. With the Prodrive backbox I was getting a lengthy peak boost figure....a bit frightening if the ecu can't back off enough.
I fitted an STi backbox while waiting for a knocklink - I'll be fitting it this week and experimenting (carefully!) after an ecu reset.
Common sense and a boost guage is the minimum before doing this I'd suggest - I'm also fitting the knocklink this week and a lambda one next
Richard
I fitted an STi backbox while waiting for a knocklink - I'll be fitting it this week and experimenting (carefully!) after an ecu reset.
Common sense and a boost guage is the minimum before doing this I'd suggest - I'm also fitting the knocklink this week and a lambda one next
Richard
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