Depends on the percentage, ASP list some numbers on their site for the 3.7, 4.7, and 5.9 but none for the hemi. Nick/airram had the ASP on his 4.7 for a long time w/ no issues until he upgraded to the ATI pulley. If you think the ASP will give you trouble spend some more cash on the ATI.

 

IIRC, the thread about these things blowing people's engines was about the early ASP ones.

 

I don't like under drive pullys, but I do recommend eFan for reducing engine losses. The u/d I believe doesn't provide the return for the cost and effort. It like the other mods are a personal choice.

 

we'll let ya slide this time

 

ASP quote 6.7HP and 19 Ft/LBS for the Hemi

 

Your probably better off just getting a e-fan, you will get a equal if not better gain with that mod then the under drive pulley.

 

Thank you sir. It wont happen again.... ;-)

 

Well due to an overwhelming negative response I wont even f@$k with the pulley. I have read have a lot on here that says power wire is a crock, so im not gonna waste money on that either. Whats next, performance wise, thats $400 and under? Ill be doing headers in a month and honestly my knowledge of gears is limited. Sorry just rambling here. Thank you guys for your info! I just wanted to find another performance mod that was reasonably priced and i thought the pulley would be it but I will have to keep looking.

 

new cam
cai? dont see it in your sig

 

I run a Damper/Pulley 20% underdrive Type (Australian Manufactured). Not sure if it gave me more HP as I installed it same time Cam and headers went on cause my factory Balancer had the rubber center portion all cracked and even hanging out/separating (after 125 K miles US). I Had to go with a six rib belt, set rearward, but have had no problems at all and it came with an SFI approved card.