Installed an e-force supercharger around 5k miles ago along with a catback custom 3" exhaust and now wanting more out of this coyote motor. Not wanting to do headers so what else would be a good investment? Coming from the diesel world so building a gas burner is new to me. Upper or lower pulley change? CAI? Offroad y-pipe? (for offroad use only) and of course a good custom tune since im running the base tune from edelbrock right now

 

The supercharger will definitely benefit from a good set of headers. You're created a motor like a funnel...great big intake that can't get it out of the small exhaust manifolds. The intake and exhaust need to be matched.

Going to an off road (no catalyst) exhaust will also help a lot. A CAI is basically just for looks and to make a little more noise on a stock engine, but if it can flow better it might be worth doing AFTER the exhaust work. Open up the exhaust for the biggest bang for your buck.

 

Water/Methanol injection system... I think AEM makes kits with a 5 gallon tank that would flow enough to allow you to increase your boost pressure (much larger pulley) with the S/C without risk of detonation.

They aren't that expensive either... maybe $500-$600 range. I was looking at these for a 2.0 Ecoboost Fusion for which we're looking to increase the boost pressures.

But I agree with Turbo Dog, you have a funnel right now. I would look for a good speed shop, have them pull the motor up and fab you some headers as the clearances are really bad in these trucks and the "off the shelf" stuff requires the same amount of $$ or irritation if you DIY to install after you pay for the aggravation of trying to fit them.

Have you dyno'd it? Careful with the 6R80... I dont know what its technically rated to but I think you could quickly approach the reliable limits after you add boost.

 

Thanks for the input! I haven't had it on a dyno yet, was waiting to see how it would run with the supercharger and base edelbrock tune first. I have an offroad y-pipe on the way now so I'm gonna install it and then take it in for a good dyno tune. Hopefully that will give me the little more I'm looking for without cranking up the boost. Is there any numbers out there on how much boost these motors can handle?

 

Awesome.

How come you don't want headers? A set of long tubes is the logical next step before turning up the wick.

 

If the stock manifolds are a major constriction then I will be ok with waiting about the y pipe and going for headers. Around 500 rwhp is where I would like to be at and was hoping I could get there with stock manifolds into 3" y-pipe and 3" flow through exhaust. Would that number be possible with that exhaust setup and the proper tuning? The supercharger is putting out 5-6 lbs right now