Sent! Let me know if you got it. Now when will the HFC's be ready?

 

Sweet dude! Only one more now...

 

trying to finish up the test pipes this weekend so we will see.

 

WE NEED ONE MORE!!

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I have a feeling Phuoc will be able to come through soon

 

ok so i am trying to find out if there is anything else i should possibly get that would help me with the best gains when i get the tune. my setup is stillen hi flow intake/z-tube/borla true dual/art pipes/md 5/16 spacer.. should i get pulleys? i mean i am at almost 75k and my belts are looking worn thought i would do an idler delete and install the new pulleys. im def not going with headers since they will be pointless when i go fi or engine swap down the road.

 

no I think you are good man... not much else to do. pullys won't affect tune.

 

yea not much i can do unless i boost i guess what about the port and polish the plenum?

 

that will help, but not really worth it for the price... might gain 5hp at best

 

From what I recall, the pulleys added a decent amount of power... depending on if you go underdrive or just lightweight (the 2nd is the better approach IMO), I would think it would have some impact on the tune... (still thinking through this, so I'm not 100%, but I'm thinking it would impact)

 

I thought all pulleys do is give back some parasitic loss so you are just getting more usable power, and maybe a little faster rev because of the lighter weight?

 

That is correct. Your engine will be more efficient and will most definitely rev faster because it has less mass to spin. And that's where I'm getting myself confused. I would think that just the simple fact of the increased efficiency of the motor would change it's general behavior and the ability to rev faster and the affect of that fact on air/fuel ratio....

 

I guess the question is will this mod show gains independent of a tune or not. I don't know, but my guess is that with or without a tune it will show equal gains, but who knows. Or I guess I could see it magnifying gains from a tune also. Surely someone has dyno tested it.

 

it shouldn't affect A/F much if at all... if it did, you would need a tune after you put on lighter/smaller wheels too

 

wow Steve just posted this up... this is the rear end of a twin turbo camaro he is about to tune... look at that rear axle and those massive fuel pumps