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Have I mentioned I like factory FPRs. I have yet to see an aftermarket FPR that is stable.


It could be because I still have the 5/16" hard lines and have incorporated 3/8" fuel injection hose for the rail returns to the regulator and from the regulator to the 5/16" hard return line. I wanted an adjustable regulator because the injectors may be marginal up top, depending on how much power the engine makes..... they're 325cc/32lb @ 3Bar. The regulator is now set at 43 psi.

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Nothing looks wrong with the fuel map.


Thanks very much. I think I'll enable auto-tune in the next lower bin row and let it have a go at tuning the areas just off-idle.

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I would try adding some timing where the engine feels week. Go up 2* over a test area and drive it. When you feel you are near a limit, either push a test say a small area up 3* to force knock but then start backing off 1* to make it safer. If knock was not detected in a test area raise the surrounding bins and test again. Sooner or later you will get into the knock circuit, or detect it yourself.
Knock will probably be around 17-1800 Rpm and 3-3300.



I'm off in a few minutes to try it - this time I've set the knock detector with just enough to keep it unlit at idle and will see what it does.

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When you get around to an exhaust the Aussies have headers for these but if staying with iron then use the original Y pipe but go to 2 1/2 back from the original joint where the two sides meet.


I've seen those headers, but I think I'm happy with my ported factory manifolds and Y-pipe arrangement.... a little restrictive at the junction, but who knows - it might work like a venturi/merge collector and accelerate exhaust gas through the narrow area to the larger pipe. Yesterday I made a Tuesday appointment with a shop to bend and install a 2 1/2" exhaust to join the Y-pipe with a transition. I'd prefer mandrel bends, but for $250 including a Dynomax muffler and bolted flanges, it'll be good enough to use for a while - then maybe the bends can be used to copy for a mandrel-bend set later.

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How much boost have you seen with it so far, 130 KPA or up to 150?


I've seen the boost gauge go to 7 psi for very short durations under kickdown conditions around 30 to 60 mph..... haven't looked at the laptop under boost, but 7 psi would be right at 150Kpa.

Frank

Last edited by FrankR; 01/20/08 03:39 AM.
'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum