From what I understand running the Lex afm and 550s trick the stock ecu into using 25% more air and fuel and it will make some adjustments to air/fuel ratios as it ?learns? how the car is running at throttle positions and under different loads . I know it's adjustments will not be as precise as running an aftermarket air fuel computer. The questions I have about this setup are:
1. Does this setup also move fuel cut up 25% allowing roughly 16+/- Lbs of boost?
2. To tune this setup you need to use a wideband and an adjustable fuel pressure regulator. You watch to see if you are running more on the rich side you cut fuel pressure and if you are lean you increase. Is this correct?
3. Is there any thing I need to do to adjust for a smooth idle or will the ecu handle this
And I know that this is not on the same subject but how much of the sound do you loose when you recirculate the HKS SSQV? Could you run it with Bosch recirculator valve and vent part of the air and recirculate the rest or is going to speed density the only way. Looking for the best of both worlds, a car with 12-15 lbs boost that can sound off when you want it to but wont die on you and leave you looking like an idiot. I know there more advantages to running speed density but for me I cant spend the $$$ just for the PSSSSSST at the red lights
If any thing I have said is wrong Please point it out
I bought this car with a bhg and I have never driven it the motor is in the shop for a full rebuild. and I just want to get the entire setup nailed down and running before winter hits.
Current set-up
.020 / .5 mil over nippon pistons
shot peen rods
arp rod bolts
arp head studs
arp flywheel bolts
clevite rod and main bearings coated
Line hone
rods and mains back on the tight side of factory spec.
rods and pistons balanced to 1 gram
6m crank balanced and polished
new Toyota flywheel and pressure plate / balanced
block and head lapped for MHG
3 angle valve job
comp cams 975 springs
gasket match intake side left exhaust alone
titan 3in downpipe custom 3in exhaust
hks turbo timer
ct26, 57 trim fresh rebuild
new Toyota oil pump,
1. Does this setup also move fuel cut up 25% allowing roughly 16+/- Lbs of boost?
2. To tune this setup you need to use a wideband and an adjustable fuel pressure regulator. You watch to see if you are running more on the rich side you cut fuel pressure and if you are lean you increase. Is this correct?
3. Is there any thing I need to do to adjust for a smooth idle or will the ecu handle this
And I know that this is not on the same subject but how much of the sound do you loose when you recirculate the HKS SSQV? Could you run it with Bosch recirculator valve and vent part of the air and recirculate the rest or is going to speed density the only way. Looking for the best of both worlds, a car with 12-15 lbs boost that can sound off when you want it to but wont die on you and leave you looking like an idiot. I know there more advantages to running speed density but for me I cant spend the $$$ just for the PSSSSSST at the red lights
If any thing I have said is wrong Please point it out
I bought this car with a bhg and I have never driven it the motor is in the shop for a full rebuild. and I just want to get the entire setup nailed down and running before winter hits.
Current set-up
.020 / .5 mil over nippon pistons
shot peen rods
arp rod bolts
arp head studs
arp flywheel bolts
clevite rod and main bearings coated
Line hone
rods and mains back on the tight side of factory spec.
rods and pistons balanced to 1 gram
6m crank balanced and polished
new Toyota flywheel and pressure plate / balanced
block and head lapped for MHG
3 angle valve job
comp cams 975 springs
gasket match intake side left exhaust alone
titan 3in downpipe custom 3in exhaust
hks turbo timer
ct26, 57 trim fresh rebuild
new Toyota oil pump,
