fitted veilside ECU today started with 1mm boost jets to both intakes inner pipes, the ones which go to the actuators.

ive an after market boost gauge which used to boost to 8 psi stock. ok here goes 1mm jets third gear up small hill DETONATION!

1.2mm jets same hill DETONATION! i was begining to wory at this point, anyway 1.5mm jets fine no det probs but now gauge reads 2psi more than it used to 10psi. on stock gauge it goes to last white mark surely this cannot be right, am i missing somthing or have i done somthing wrong.

Is the veilside ECU mapped for UK fuel or Japanese fuel? If it's mapped for Japanese fuel (Higher octane than what we can normally get here) Then that could be causing the detonation.

 

Have you tried using an octane booster?

 

Also remember the stock boost gauge isn't very accurate!

 

John.

im using shell optimax approx 98ron only 2 ron lower. i also have an aftermarket gauge says it is boosting to 10psi now.

Sounds like something is seriously wrong if you ask me...

Ton mate, sounds to me and from experience that you must of been introducing an air leak on the first two attempts and on the third with the bigger boost jets got it right,this would also explain your increased boost level as you have succesfully lowered the vacuum to the actuators and hence holding them shut for longer = more boost available.The veilside ecu is well known to me having run my previous zed on one and detonation is NOT a problem however as with all upgraded ecu`s mapping is more for performance than normal so it would seem more likely that a stricter approach to correct engine running tolerences will be required,chances are a small air leak on a caused by rumaging around the pipe work (easy done on a zed)whilst fitting the boost jets would be less tolerated by an upgraded ecu than a standard one.

Oh and Chris C where do you get you opinion from please state as said elsewhere answers with strong opinions need qualifiying as if not they can be misleading to newer members or do you in fact know something we do not?( ) Jeff TT

jeff can you remember what boost you were running with your first one.

what should the timing be with modded ECU.

and correct gap settings please.

mail me these settings please. and if i have no joy are you available to look at it.

Tony will dig out the settings and mail you if not can sort it for you anyhow.

Jeff TT

 

www.zedworld.co.uk

cheers jeff. off to fit breather now.