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St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
Reduced engine power after installation
I put in OBX header, deleted cats, BPP vortex, NGK TR55 spark plugs, FAST 102 and ported LS2 TB. When I start up it runs rough and shows REDUCED ENGINE POWER and of course the CEL is on. It sputters from 800-1000RPM like there is a vacuum line lose but I am pretty sure everything is hooked back up. It does not backfire or die just sputters back and forth like it is sucking air.
The one issue is that I cant find a hose that connects to the nipple on the passenger front side of the FAST intake? I just put a cap on that intake port but maybe I am missing something?
I knew it was going to act crazy when I started it up after all that without a tune but want to find out if anyone else has installed similiar mods and had the same reaction afterwards.