Supercharger build-up begins

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vegascarnut

vegascarnut

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Have you talked with JDM about the setup you want to run?
I could be a little off on the numbers, the Twin 60mm is what comes with the Stage 2 Roush (590 HP)and the Stage I Whipple (650 HP).

I have yes. Their 650hp tune uses the twin 60mm throttle body. It's just their tune that gives the hp increase. They want to be sure you have top quality plugs installed, and at least the 47lph injectors and fuel rails that come with the Roush Phase 2 setup.
 

DWH3

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I'm actually running an N/A tune from JDM now. They are really great to work with, and I am absolutely getting their tune for this setup. I've picked up most of the odds and ends on eBay, Amazon and many hard to find parts directly from Roush:

• New GT500 take-off twin 60mm throttle body, eBay: $80
• New GT500 fuel pump, Amazon: $120
• Direct from Roush because it was too easy: Various hardware, wiring, brackets, a clean air tube from the MAF to the throttle body, FEAD shield, Degas bottle & brackets, blower to throttle body elbow, one pulley, so forth and so on: $1,200. I was fully comfortable hardwiring everything myself, and extending necessary harnesses, but I splurged on good clean wiring. Same with making brackets vs. buying good, clean ones the fit just right.
• May go with an AFCO heat exchanger, but picked up a new Roush unit for about $375 with the impossible-to-find brackets, which the AFCO requires anyway. I'll run it for a while and see how I like it before I upgrade it.
• Bulk heater hose, vacuum line, gaskets, clamps, etc. $120
• NGK plugs: $125
• Belt, Amazon: $30

All in I should be making 650-ish fwhp with the 75mm pulley I have on it. Blower, rails, injectors, manifold have about 15k miles on them. The rest of the parts are new. I'll probably spring for some other items, like new plug wires, etc. which I'm not going to count in the blower "kit" cost. I'll have $4,500 in it total after the tune, vs. $7,200 for the phase 2 Roush and the crappy 590hp tune.

Just FYI and for anyone in the future, the Roush brackets for the AFCO intercooler are included in the "Roush 421805 Hardware Kit" which I was able to buy from Amazon but it also available other places. This obviously doesn't do you any good now but I'm sure this thread will be referenced in the future. This kit typically runs about $140 so your purchase wasn't a bad deal at all. I got lucky and paid $43 for mine.

Good luck with the build!
 
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vegascarnut

vegascarnut

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Just FYI and for anyone in the future, the Roush brackets for the AFCO intercooler are included in the "Roush 421805 Hardware Kit" which I was able to buy from Amazon but it also available other places. This obviously doesn't do you any good now but I'm sure this thread will be referenced in the future. This kit typically runs about $140 so your purchase wasn't a bad deal at all. I got lucky and paid $43 for mine.

Good luck with the build!

That’s great info. Thanks!
 

Anthony k

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Love the arguing about email tunes and “Marketing Flywheel HP” numbers.

STOCK throttle body
527 Real World WHEEL HP. 497RWTQ
87 octane
Zero drivability issues
Livernois Motorsports DYNO tuning.
Not a penny wasted
 
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vegascarnut

vegascarnut

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Love the arguing about email tunes and “Marketing Flywheel HP” numbers.

STOCK throttle body
527 Real World WHEEL HP. 497RWTQ
87 octane
Zero drivability issues
Livernois Motorsports DYNO tuning.
Not a penny wasted

That’s cool! Good for you. Livernois, VMP and JDM are all great companies. I don’t think anyone is arguing. JDMs email tunes have been developed on the dyno there, and are remarkably consistent from vehicle to vehicle. Dyno sheets from various customers around the country confirm 500-600WHP depending on configuration. It’s always a good idea to fine tune on a dyno if want something even more specific to your setup, but it’s pretty well known that JDMs tunes make what they make with a given setup.
 
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vegascarnut

vegascarnut

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Just FYI and for anyone in the future, the Roush brackets for the AFCO intercooler are included in the "Roush 421805 Hardware Kit" which I was able to buy from Amazon but it also available other places. This obviously doesn't do you any good now but I'm sure this thread will be referenced in the future. This kit typically runs about $140 so your purchase wasn't a bad deal at all. I got lucky and paid $43 for mine.

Good luck with the build!


I double checked this. That hardware hit does not include the lower crossmember. It includes 4 smaller brackets for the radiator, but if you want to install any radiator that bolts up using the Roush hardware, such as AFCO, you’re going to need that crossmember, and you have to get it from Roush directly.
 

DWH3

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I double checked this. That hardware hit does not include the lower crossmember. It includes 4 smaller brackets for the radiator, but if you want to install any radiator that bolts up using the Roush hardware, such as AFCO, you’re going to need that crossmember, and you have to get it from Roush directly.

That's a good point. I should have clarified that this kit is only helpful if you already have a Stage 1 (the crossmember is the same) but want to upgrade to the AFCO intercooler.
 
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