Chevy and GMC Duramax Diesel Forum - View Single Post - Is it safe to raise the Rev limiter to 4400?

**05_LLY** · 05-28-2007, 10:42 AM

If you want to spin the enginr that high the only tuners i know that will allow it to make power past 3000 rpms are the ppehot et+2 and efi live! Mainly because the fueling table is nothing but 0's after 3250 rpms so even raisng the rev limiter there is still no fuel up there, these two tuners i know take care of the problem, others might but i never tried.

05-28-2007, 10:42 AM	eBay Motors #4 (permalink)
05_LLY Gear Jammer... Join Date: May 2006 Location: Mt. Pleasant PA Posts: 2,014	If you want to spin the enginr that high the only tuners i know that will allow it to make power past 3000 rpms are the ppehot et+2 and efi live! Mainly because the fueling table is nothing but 0's after 3250 rpms so even raisng the rev limiter there is still no fuel up there, these two tuners i know take care of the problem, others might but i never tried. __________________ Caleb 05 D/ZF Reg. Cab PPE GT 4094r, ATS CP3X2, Best ET-12.53@ 109MPH 5/08 Stock Turbo, ATS CP3X2, Best ET -12.91@ 106MPH 10/08 Under the knife to attach a second turbo 04.5 D/A CC/SB- SCIV w ATS 5star converter,Mike L cooler Stock Turbo Best ET 13.53 @ 103Mph @ 7300lbs Waiting install of GT4094R