5 replies to this topic

[SteveA]

The scanner at work is lame so here are the best ones I could get. The curves are clearly visible and you can sort of read the figures. [attachment=18154:attachment] BHP is 245.5 @ 4998 rpm [attachment=18155:attachment] Torque is 264.8 @ 4750

[VXT Tim]

You wern't kidding about the torque being flat With regard to the peak power what is happening at the top end? Fueling issues? Bit of slip on the rollers?

[SteveA]

Dunno, seems fine on the road but then I very rarely take it to 6K.

[garyk220]

Standard turbo struggles to hold boost above 5k rpm. The torque figures above 5000rpm actually looks pretty good compared with others I've seen. Mine (AMD Stage 2) resembles a cliff face after 5500rpm, and the power figure drops off much quicker. Looks good

[MAP18W]

You wern't kidding about the torque being flat

With regard to the peak power what is happening at the top end? Fueling issues? Bit of slip on the rollers?

It was quite hot in the dyno cell so inlet air temps will have been rising, as they do on a dyno, and so the ecu may well have addeed some additional fuel at the top end to bring cylinder head temps down.

No fuelling issues as we always check the rempas on the dyno using wide band lambda to check the fuelling is all ok.

If you look at the graph the peak power at 5,500 is very close to what it is at 5k so nothing to worry about.

[oblomov]

The scanner at work is lame so here are the best ones I could get. The curves are clearly visible and you can sort of read the figures.


BHP is 245.5 @ 4998 rpm


Torque is 264.8 @ 4750

bhp is almost identical (243 and graph) to my AMD stage chart but ft/lbs is way up, mine was only 251.

Edited by oblomov, 20 June 2007 - 12:12 PM.