Twin Turbo Tuning

[whtmustgt90]

OK HERES MY COMBO..
306, Stock Crank 10/10, Stock Rods, TRW 9.6-1 (NOW LIKE 9.8 due to decking and milling, now oringed), Stock Heads (minor bowl work), Stock Cam, Motorsport Push Rods and Lifters, 1.72RR, GT-40 U&L, 65mm, 50#, Accel DFI gen6x 2BAR, DDMI TWIN TURBO KIT ( god i love typing that :) ),Turbo XS BOV, Turbo XS Boost Controller, 2.5 O/R H-Pipe (soon 2 b X), Dynomax Race Magnums; Centerforce D/F, Tremec Tko, Motorsport Alum. D/S, 3.55s, 8.8(stock but rebuilt), UPR ProSeries Rear Suspesion Kit, Competition Eng. 8-pt., Lakewood Subframes, Lower Battle Boxes (fully welded u&l boxes), Nitrous Works 50-175hp Plate ;), ICE COLD A/C
95% STREET DRIVEN (and raced ;))
IM RUNNIN 40PSI AT IDLE (1000HP AERO PUMP, FILTER, REG) 1/2 INCH RAILS.. I SEE LIKE 60 PSI OR SO(DONT REALLY NOTICE)..

OK NOW THAT ALL THAT WAS SAID LOL.. HERES THE THING.. NOW IM STILL IN THE TUNING PHASE.. AT LIKE 5500 AND 8PSI IM IN THE 140 TO 150 RANGE AND 23-18 OR SO THROUGH THE BOOST RANGE IN THE TIMING TABLE.. SEEING AROUND 13.3 TO 13.7 ON THE DFI A/F.. PULLES LIKE A RAPED APE.. JUST WONDERING WHERE I SHOULD B AT OR WHAT I CAN GET AWAY WITH.. I HAVE NO KNOCK AS OF NOW.. PLEASE GIVE ME YOUR .02.. THANX
DOM

[whtmustgt90]

any one?

[vinny5oh]

40 PSI @ idle? I didn't think turbos made boost until they were under a load.

[whtmustgt90]

lol sorry i meant 40psi of fuel hehehe

[vinny5oh]

Whew.........that would explain that.

I was under the impression that a good boost A/F ratio was around 11.5:1 but if it's pulling good, making good power and not detonating..........???? Have you tried putting more fuel in it to see how it would react? Does it respond any quicker?

What's that "AT LIKE 5500 AND 8PSI IM IN THE 140 TO 150 RANGE" all about? Is that fuel pressure too or mph? :confused:

[whtmustgt90]

hehe sorry again...the reason u would go that low(i believe) of and a/f would b to stay away from detonation(ud be actually cooling the air with raw fuel).. i tried little amounts.. still knockin.. weird.. that quote isnt complete sorry i was rushin as usual.. that means: at 5500 rpm and with 8 psi boost im in the 140-150range on the base fuel map.. i have accel dfi gen6.x, those last #"s are part of an interpolar(that the word) graph, all that they are is the amount of fuel being injected into the engine in milliseconds(pulses). the injectors go static(stay wide open 24/7) at around 220 (i think) at high rpm.. so in other words. i still have a ton of injector to go..

[vinny5oh]

Hmmm. I would think the best way to figure it out is to get to a track asap and tinker around with it and watch your MPH. I haven't gotten into that DFI stuff much yet (still getting the car together) so I can't help you there.

Somebody at turbomustangs.com (http://www.turbomustangs.com) could answer your questions. Good site for info, check it out!