Hi!
My sled has a CPR frontmount-kit with Garret 2560(?) and a Vortech BOV. BOV and fuel pressure regulator are connected to intake rubber because of earlier problems running rich when closing throttle after WOT.
3 headgaskets and 10 psi boost for the moment(have been around 16 earlier).
#150 Main, #17,5 lowrange jets, needles 2nd seen from below(richer than stock), fuelscrews 1½ turns out.
AFR at idle 14-15, cruise without boost 11-12, cruise with 5 psi boost around 13,8-14,5, WOT around 11-11,5.
Idle AFR is easily fixed with fuelscrews,but they do not affect the rich midrange without boost. If i adjust the needles that can be fixed too, but then it is running really lean at 5 psi instead.
What do you think about changing lowrange jets to #15, rise needles to richest position and turn fuelscrews out some to compensate the smaller jets?.
I have tested 2½ turn on the screws with #17,5 jets= AFR 12,5-13 at idle.
Exhaust header starts glowing pretty easy too,maybe because the lean midrange, or is it just because the exhaust cam timing?.
Is the adjustable threaded tube inside the intercooler the pitot-tube you are calling it?. Hose to the floatbowls is connected there if i remeber right. Can adjusting the tube do some for the AFR?.
The engine runs pretty good now,but i do not like the lean midrange and the glowing header..
What kind of airfilter is best for this kit?.I tried with a UNI foamfilter,but it did not work.I it just mesh and a prefilter ontop of that the way to go?.
My sled has a CPR frontmount-kit with Garret 2560(?) and a Vortech BOV. BOV and fuel pressure regulator are connected to intake rubber because of earlier problems running rich when closing throttle after WOT.
3 headgaskets and 10 psi boost for the moment(have been around 16 earlier).
#150 Main, #17,5 lowrange jets, needles 2nd seen from below(richer than stock), fuelscrews 1½ turns out.
AFR at idle 14-15, cruise without boost 11-12, cruise with 5 psi boost around 13,8-14,5, WOT around 11-11,5.
Idle AFR is easily fixed with fuelscrews,but they do not affect the rich midrange without boost. If i adjust the needles that can be fixed too, but then it is running really lean at 5 psi instead.
What do you think about changing lowrange jets to #15, rise needles to richest position and turn fuelscrews out some to compensate the smaller jets?.
I have tested 2½ turn on the screws with #17,5 jets= AFR 12,5-13 at idle.
Exhaust header starts glowing pretty easy too,maybe because the lean midrange, or is it just because the exhaust cam timing?.
Is the adjustable threaded tube inside the intercooler the pitot-tube you are calling it?. Hose to the floatbowls is connected there if i remeber right. Can adjusting the tube do some for the AFR?.
The engine runs pretty good now,but i do not like the lean midrange and the glowing header..
What kind of airfilter is best for this kit?.I tried with a UNI foamfilter,but it did not work.I it just mesh and a prefilter ontop of that the way to go?.
wienerwater
Expert
I run an Alpine front mount on my RX1, but similar setup.
From what I know, the idle AF is not such as big deal, other then mine runs around 12.8-14 at idle. The midrange again, get it close to 12, but WOT is the most important one.You need to get it around 12.
Your setup may have different jetting needs, as I am at a 130 main.
From what I know, the idle AF is not such as big deal, other then mine runs around 12.8-14 at idle. The midrange again, get it close to 12, but WOT is the most important one.You need to get it around 12.
Your setup may have different jetting needs, as I am at a 130 main.
wienerwater said:
The idle afr is easy to adjust,but lowspeed crusing is a problem when it runs that rich. Same thing when it runs lean on low boost as soon as the BOV starts opening..
I need more fuel on low boost and less without boost,but how can i do that?.
