how to let torque hold longer?

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Jul 10, 2007 | 06:01 PM

#16

AhBao9388

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From: Singapore

Quote:

Originally Posted by chrisw

anywhere to tune in maylasia? there has to be some good empty roads up there that is resonably accessible to singapore

knock is not gear dependant. aggresive timing changes between cells is.

for example

at 2500 pm starting in the 160 load column you have the cells
12, 6, 3
then at 3000 you have
12,12,7

if you trace a line that represents your load as you move through the power band, any large jumps in timing can cause knock.

I try to keep the large jumps in timing to a minimum. If you can't get rid of the large jump in timing, check you fueling at those load points.

guess would only be able to do that on a weekend then. so meaning to say if i wan to let my torque hold longer, i increase the timing more?

Jul 10, 2007 | 07:58 PM

#17

chrisw

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From: Santa Cruz

Quote:

Originally Posted by AhBao9388

guess would only be able to do that on a weekend then. so meaning to say if i wan to let my torque hold longer, i increase the timing more?

increase it or hold it around no more than 8 degrees at peak torque. This is what I have been told by several well respected tuners who regularly post in this forum.

I try to hold the most timing I can without knock and while keeping the AFR values in a safe range.

Jul 10, 2007 | 08:15 PM

#18

AhBao9388

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From: Singapore

ok guys. i did a 3rd gear pull just now and it seems that the torque is higher than in 2nd. so thru this graph have i max out my stock turbo? is there any chance i can still go further? could i let my torque drop from 6k rpm instead. aggressive timing?