Hey guys, just got everything in to do the ls1 swap. fans, harness and nelson re-tune. Just wondering what gains I can expect? They are going on a 6.0 with CAI dual exhaust and tune. A friend of mine was telling his dad and his dad laughed and said 5 hp if that. anyone have dyno sheets I can show this %$#@..?

Thanks

Korey

 

10RWHP 1-3 MPG gain

 

I did it on my Yukon and noticed no difference in power or MPG. I didnt dyno, so I can't help you there, but the gain aint much.

 

I just switched back to the engine fan because my engine would start to overheat during low speed towing situations. I didn't notice any power gains but 10-20 hp would be tough to notice in a two ton vehicle. I unfortunately didn't gain any mpg either.

 

your MPG gain is only going to be in city.