Question for guys who actually have the the Roush Kit

[The Watchman]

Has anybody here ported their blower with Kong? I have only seen 2 that have used Jokerz. I would also be interested in dyno data as well to see the gains for this supercharger - ported vs OEM. I haven't been able to find this anywhere regardless of the shop doing the porting. Jokerz posted something on FB years ago about their port service picking up 48whp & 32wtq....with no retune on the Phase 1 Roush kit...



For ~$1500 that seems like a better HP/$ than most if not all other mods - especially those that don't have access to E85 and don't want to go catless...

Why aren't more people doing this? Porting seems super popular on the LT4 platform and that blower seems to have some similar issues with efficiency, cooling, etc.

Also, almost forgot to mention, you get more whine from the blower when it's ported...

The Roush P2 2650 for 3rd Gen Coyote tops out at around 17 psi of boost after porting, 103 mm throttle body and smaller 2.8 or 2.7 pulley upgrades.

The TB upgrade also requires a cowl induction hood because of the necessary TB adapter which allows functionality will NOT make OEM hood clearance....

All in all, you are looking at around 900-1000 whp give or take after these mods.

If you do the math and add up all the associated costs with a max effort Roush P2 kit for 3rd gen Coyote, there are simply better more efficient options out there to make big power for less $$$ and hassle.

Also, this does not include the other necessary mods in order to make this kit produce that kind of power reliably, ie - intchillers, e85 etc.

My rough estimate, sans the price of the blower itself is around $7000, not including labor, just to make 17 psi and/or 950 whp....

 

[The Watchman]

@Hammerhead13579 here is a link to 2 different YouTube vids from DRP Motorsports down in N. Carolina. This shop has dialogued the necessary mods and power numbers for max effort Roush P2 for 3rd Gen Coyote.

 

[Hammerhead13579]

I never said anything about max effort....
I literally stated the opposite....I mentioned no E85, having catalytic converters, and said I saw a video of gains on the stock Phase 1 calibration...

 

[The Watchman]

I never said anything about max effort....
I literally stated the opposite....I mentioned no E85, having catalytic converters, and said I saw a video of gains on the stock Phase 1 calibration...

No problem my friend, I meant no harm.

My posts were only meant to provide you with all the info you would need.

I would absolutely NOT recommend you port the Roush P2 kit for 3rd Gen Coyote without e85...93 octane is notorious for its pre-detonation.

The only intention I had was to give you every bit of info you asked for and then some.

 

[Hammerhead13579]

Because porting increases boost pressure beyond what the stock fuel system and 93 octane can handle?

 

[The Watchman]

Because porting increases boost pressure beyond what the stock fuel system and 93 octane can handle?

After re-reading your post I think I better understand your question now.

To take full advantage of the porting of the Roush P2 kit for 3rd Gen Coyote you would need the upgraded throttle body (103mm) plus upgraded pulley etc and also cowl hood or some other aftermarket hood which would give the TB and necessary adapter clearance, all this produces 17 psi.

I am unaware of anyone porting the Roush P2 for 3rd Gen Coyote and not doing these other mods...although as an owner of this kit myself I an intrigued...

Nevertheless, if you only did the porting service, I still don't think I would recommend it without doing some other mods to the fuel system. At least a BAP and some injectors...

Anything over 12 psi on 93 octane is pushing it I believe...not worth the risk IMO...

 

[The Watchman]

@engineermike and @SH!FT may have some thoughts here as well...

 

[engineermike]

Interesting topic. I’d love to see some 3rd party before/after testing. Anecdotally the porting seems to make a huge difference. @Autopart101 i think dynod some before and after. Also Ray @DRP Motorsports has dynod a few of these. Ray correctly predicted @Autopart101 ‘s car would exceed 900 rwhp on the 2.7 pulley and it did. I have a hard time imagining an unported blower making anywhere near that with just e85 and a pulley.

 

[Autopart101]

Interesting topic. I’d love to see some 3rd party before/after testing. Anecdotally the porting seems to make a huge difference. @Autopart101 i think dynod some before and after. Also Ray @DRP Motorsports has dynod a few of these. Ray correctly predicted @Autopart101 ‘s car would exceed 900 rwhp on the 2.7 pulley and it did. I have a hard time imagining an unported blower making anywhere near that with just e85 and a pulley.

Blower wouldn't make more than 800whp unported on a 2.7 pulley. Unported the blower liked slower speeds and a 2.8 pulley make a bit more power than the 2.7. 103 TB inlet outlet ported blower will make 17-18 psi on a 2.7. Portered I started with a 2.6 pulley. Blower speed was to fast and made less power than a 2.7. Wish I would have Dynoed the 2.8 pulley ported.

 

[Autopart101]

Blower wouldn't make more than 800whp unported on a 2.7 pulley. Unported the blower liked slower speeds and a 2.8 pulley make a bit more power than the 2.7. 103 TB inlet outlet ported blower will make 17-18 psi on a 2.7. Portered I started with a 2.6 pulley. Blower speed was to fast and made less power than a 2.7. Wish I would have Dynoed the 2.8 pulley ported.

Also Poted 103TB 2.7 pulley DRPMOTORSPORTS tune. Car made high 930s to low 940s WHP.

 

[Hammerhead13579]

This is something. One of the only videos I could find for comparisons. With the ported blower and a cat-back he gained less than 1 mph in the 1/4 mile.

The times are also atrocious for a modified Roush 2650 car but the mph should have gone up more if there was a significant difference in power output.
Guy's name is Noah and he hasn't posted or responded in over a year so probably can't get anything else from him.
But maybe this means that porting this blower on an otherwise stock(ish) Roush build doesn't gain enough to be worth the money

 

[The Watchman]

This is something. One of the only videos I could find for comparisons. With the ported blower and a cat-back he gained less than 1 mph in the 1/4 mile.

The times are also atrocious for a modified Roush 2650 car but the mph should have gone up more if there was a significant difference in power output.
Guy's name is Noah and he hasn't posted or responded in over a year so probably can't get anything else from him.
But maybe this means that porting this blower on an otherwise stock(ish) Roush build doesn't gain enough to be worth the money

I would call Jokerz and ask them directly. I have dialogued with the owner on several occasions and he is personable and knowledgeable.

My understanding is you will want to go ahead and do the other mods to take full advantage of the ported Roush 2650 for 3rd gen Coyote.

Do you know how much boost you are getting now? 10 or 12 psi?

Because I would not recommend anymore without upgrading the fuel system or going with some kind of race gas.

FWIW, you can achieve 100-101 octane by adding a full can of Boostane Professional to your 16 gallon s550 tank of 93 octane...

But, even then, YMMV and no pun intended...

One more thing, the other variable is I would also recommend upgrading the Roush intercooler brick which sits under the rotors in the blower housing.

In summary, this kit needs the following to maximize its efficiency and power:

1. Ported blower
2. 103 mm TB and adapter
3. Aftermarket hood (so TB and adapter can fit)
4. Fuel System upgrade (even with no e85 you will still need BAP and injectors)
5. Interchiller system (preferably stage 2)
6. Long Tube Headers
7. Upgraded intercooler brick
8. Blower spacers as sold by FI Interchiller

The cost of all these parts plus install is easily $10k+

 

[Hammerhead13579]

@The Watchman

I mean no disrespect but please chill. I'm not on here trying to get advise for fully building my car and maximizing it's potential. I just wanted to know why people weren't porting their superchargers on stock tunes if they could get 45whp....
It looks like very few people are doing porting for the Roush 2650 so either they are missing out or it's not worth it and this claim is false...

 

[SH!FT]

@The Watchman

I mean no disrespect but please chill. I'm not on here trying to get advise for fully building my car and maximizing it's potential. I just wanted to know why people weren't porting their superchargers on stock tunes if they could get 45whp....
It looks like very few people are doing porting for the Roush 2650 so either they are missing out or it's not worth it and this claim is false...

Most buy this kit for turnkey and serviceability. There are bigger bottlenecks to throw money at for those who are making the best of an obsolete system.

I buy Jokerz's no tune gain claims. A ported SC should increase flow, reduce friction/heat, and decrease the work needed to spin the rotors resulting gains over stock during optimal conditions.

I still run Roush's P2 calibration. Best bang for my buck w/ the Roush installed:
Improving traction.
Adding high volume/high flow cold intercooler coolant.
Blocking heat transfer between the IM and heads.

 

[engineermike]

Here is the problem….Roush blocked off almost half of the flow area allowing air into the rotors. This is the choke point. Jokerz trims it away. And again, I don’t think a 2.7 pulley would make 920 rwhp on an unported blower.