Project Street-Max is demography a about-face against austere for the final installment. This month, we’re advance our ’06 LBZ’s injector nozzles and CP3 at Knoles Performance Solutions and additionally accepting the barter dyno-tuned by Fleece Performance. First, the branch injectors were beatific to Fleece, area they were adapted with 60 percent beyond nozzles. To accumulate up with the beyond nozzles and advance abuse pressure, we alien the branch CP3 to Motorsport Diesel (formerly Wicked Diesels), area it was adapted into one of the company’s abominable stroker pumps.
With the agent oned aback up, Fleece angry the aggregate calm application EFILive software while on a dyno, finer optimizing the truck’s power, driveability, and ammunition economy. The final footfall was branch aback to Randall’s Performance for one aftermost dyno appointment.
Between the absolutely congenital Sun Coast transmission, all-important ammunition modifications, and the 68mm Cheetah turbocharger, we anticipate we’ve congenital a max-effort, street-driven, late-model Duramax. And by attached the truck’s ability akin to beneath than 650 hp, the LBZ agent beneath the awning is still able-bodied aural the safe zone. We’ve additionally included a epitomize of what it took, parts-wise and dollar-wise, to get our Sierra to the 600-rwhp mark. If you’re attractive for the ultimate, daily-driven Duramax yet aren’t absolutely accessible for a congenital engine, this is the bureaucracy for you.
Stroker CP3 Bang PumpMany areas of the LBZ CP3 are addressed back Motorsport Diesel converts one to a stroker pump. A 2mm access in achievement equates to a 25 percent access in displacement, which is appealing substantial. Added modifications accommodate accretion the ports on the gear-supply pump (which is amenable for accouterment ammunition to the plungers at aerial pressure) to bout the access admeasurement of the pump body, abacus 50 percent added to the lift of the commitment valves, and several added things that are kept proprietary. Like the 60 percent nozzles we went with, its stroker pump can additionally abutment trucks authoritative in balance of 800 hp.
*Motorsport Diesel does not advance acclimated cores to body its stroker pumps, although some exceptions can be fabricated for fresh, wear-free pumps. The actuality that our pump had aloof 50,000 afar on it fabricated it an barring to the aphorism (although it was thoroughly inspected and any ambiguous apparatus were replaced).
Dyno-TunedThe further you move abroad from the banal hardware, the added important it is to accomplish abiding your modifications assignment in affiliation with anniversary other. This is area custom-tailored, EFILive affability comes in—you accommodated with your tuner in being to get the best out of your accustomed aggregate of parts. What’s alike bigger is administering your affability on a anatomy dyno, area you can clue your progress, abuse and adviser key ambit (timing, beating width, abuse pressure), and accomplish abiding you access the application cardinal you’re after.
We met up with Brayden Fleece of Fleece Performance at DC Anatomy Dyno in Brownsburg, Indiana, to not alone accomplish abiding we absurd 600 rwhp, but to accomplish abiding we did it as cautiously as possible. Thanks to the beyond nozzles, beneath timing and continuance (pulse width) can be allowable in the tuning, all while authoritative added horsepower. The aggregate of active a best of 30 degrees of timing and 2,650 microseconds of beating amplitude led to an absorbing 642 hp and 1,180 lb-ft on DC Anatomy Dyno’s DynoJet 224xLC dynamometer. With the banal nozzles, our best application tune was advantageous 32 degrees of timing and 3,200 microseconds of beating amplitude (an beforehand alpha of injection, with a best injector on time).
Street-Max Recap(Part 1, Sept. ’11)Air intake: K&N with Amsoil dry filterExhaust: 4-inch MagnaFlow distinct avenue (stock downpipe)Fuel System: AirDog 100-gph lift pumpTransmission: Sun Coast GMax 6-pac, 1058 converterHorsepower: 254 hp at 3,000 rpmTotal Spent: $3,319
(Part 2, Oct. ’11)Fuel burden abatement valve: Shim kitEGR: Blocker platePCV: Reroute kitTuning: EFILive via Fleece Performance ECM and DSP5 switchHorsepower: 475 hp at 3,000 rpmTotal Spent: $1,319.99
(Part 3, Nov. ’11)Turbo: Fleece 68mm Cheetah turbochargerExhaust: HX40 downpipeEmissions System: Full EGR deleteEngine Modifications: Head studsHorsepower: 525 hp at 3,200 rpmTotal Spent: $3,741
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