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My cruise and idle afr don't bother me, the 12 and 13 afrs under WOT bother me.. I'd be happier if they were 11.0 instead of 12's.

Is it possible to have a 'vacuum' leak while under boost?

I do believe I would of probably driven the other way with those near me. I don't want to catch whatever they have that makes them think that is anywhere near the same ballpark as cool. I'll add vtech to my car before I'd EVER consider something THAT hideous.

I've replaced all older hoses with either gates or fuel line 1/8 inch. I will check them all again though. Where would a vacuum leak affect my afr toward lean though? Wouldn't air escaping the system cause the same fuel in the system with less air?

Not sure if this is a repost but.. https://www.youtube.com/watch?v=RQxI9x65Ooo skip to 13:34

But why try to race a 'sports car' with your 'tow vehicle'? That's like trying to get more MPG than an eco car..

If you go NA-T, I'd try looking at finding a R154. I'm not sure how long the W58 will like the extra torque.

Also, while I'm thinking about it, when I was cruising around waiting for my car to warm up. I did notice that the afr's stayed where they normally did, right around 14.7. So my idle afr is 15.0 and my cruise is right around 14.7 but my WOT is 12.0 to 13.0, I'd love to give you a better more...

Not sure, I don't have a way to check it while driving.

To sum everything up in one post. 560cc low impedance injectors 2.3 ohms across the board from a evo 9. walbro 255 set at 44 psi with no vacuum regulated by the AFPR DM kit with the jtube bypassed. Running a AEM UEGO to watch my AFR's. At idle on base pressure(36psi) the car did NOT want to run...

The afm is in good condition, 560cc injectors are flow tested and in good condition and the reason I find near 40 psi weird is because normally the base FP is lowered, not raised for the injectors.

I got the injectors flow tested by DM before I even considered putting them in the car, while they were getting cleaned I also bought ev1 injector clips.

I bought the 560's off the forum. They're 560cc evo9 injectors, pink body. 2.3 ohms across the board.

when i bought mine it was only around 97k.

sorry for the confusion, she has a new o ring on the injector. my fuel system has no leaks nor restrictions anywhere in the system. i am also not running the 12v mod. when i first changed the injectors and didnt mess with the fp at all she started at 15.0 afr and quickly went over to -- lean and...

Im home with a fever but i will go outside and check the fp and try to pinch the rubber line and find my max fp. i do believe its set near 44 though with no vacuum.

i have both.

yes, dm afpr kit with j tube deleted and walbro 255. i just installed the 550s 2 days ago but tore a o-ring putting them in. so i had to wait for a day to get a new o ring. my fuel system holds pressure well over 5 minutes.

ive always seen that lex 550 runs rich and most people reduce fuel pressure to compensate for it being pig rich.

just make mock up spacers out of wood to get the height adjusted correctly.