1988 454 Tow Vehicle ECU Chip Recomendation

1legjerry · 04-24-2015, 11:09 PM

Had a 88 dually 454. Biggest improvment i did was new exhaust with high flow cat, performance muffler and 3" pipe.

Hill on the freeway near home, (empty) wouldn't climb it without downshifting into 3(700r4 not original) and would slow down to 40-45. After exhaust it wold climb over in overdrive and never below 60-65.

You could find a 96+ vortec with a roller cam and add your tbi.

04-24-2015, 11:09 PM	#7
1legjerry Junior Member Join Date: Jul 2011 Posts: 85 Likes: 4 Liked 72 Times in 15 Posts	Re: 1988 454 Tow Vehicle ECU Chip Recomendation Had a 88 dually 454. Biggest improvment i did was new exhaust with high flow cat, performance muffler and 3" pipe. Hill on the freeway near home, (empty) wouldn't climb it without downshifting into 3(700r4 not original) and would slow down to 40-45. After exhaust it wold climb over in overdrive and never below 60-65. You could find a 96+ vortec with a roller cam and add your tbi.