Question for guys who actually have the the Roush Kit

[Matthewstorm]

Here the results
3 runs total first run didnt graph
Runs had a min cool down

Those look like the same numbers as before.

 

[jhunt47]

Those look like the same numbers as before.

What do you mean as before.

 

[Matthewstorm]

What do you mean as before.

My numbers before the updated tune. They're supposed to be higher with the update.

 

[jhunt47]

Matt im almost certain we have the same tune. The tune you got I got the first when it came out. My car was at the dealer waiting on Roush to release it. I was in constant contact with the dealer and Gavin for this tune release. The tune that is on my car is the very latest from Roush.

 

[Matthewstorm]

Yes, we have the same exact tune... Now. My car also sat at the dealer for almost a month before Roush released something. But the tube that was released for me to pick up my car on 4/29 was for a Phase I. That's why this new tune, for me, is like night and day. At least that's how my performance shop explained.

 

[cimbt001]

Hi! My first post here. I have a ‘20 6M PP2 with a P2 that was installed in early Dec ‘20. I’m installing a KC this week primarily due to terrible drivability I get in hot Florida summers and hoping that cooler IATs will help. Is it likely that I’m running the old tune and will the combined effect of the KC and the new tune (assuming that I’ve got the older tune) help? If so, how do I go about getting the new tune and how much will it cost me? Thanks!!

 

[Azul Assasin]

Hi! My first post here. I have a ‘20 6M PP2 with a P2 that was installed in early Dec ‘20. I’m installing a KC this week primarily due to terrible drivability I get in hot Florida summers and hoping that cooler IATs will help. Is it likely that I’m running the old tune and will the combined effect of the KC and the new tune (assuming that I’ve got the older tune) help? If so, how do I go about getting the new tune and how much will it cost me? Thanks!!

You need to contact roush with your vin# and they will let you know if you have the latest revision. It should not cost you anything. A few guys have the killer chiller on here. I'll let them comment on driveability.

 

[cimbt001]

You need to contact roush with your vin# and they will let you know if you have the latest revision. It should not cost you anything. A few guys have the killer chiller on here. I'll let them comment on driveability.

That’s great! Does the new tune improve drivability in hot weather?

 

[Azul Assasin]

That’s great! Does the new tune improve drivability in hot weather?

The latest revision was released late last year. I didn't have mine done until April this year when I got my car out for summer. We have had some 85 degree days here in Michigan now. I haven't had any problems with iat2 being too high yet. During pulls it gets up to about 140s but comes right back down to high 120s pretty quick.

 

[cimbt001]

Thanks! Did you see better drivability in hot weather compared to the old tune? Do we know at what IAT2 the new tune starts to pull timing?

 

[cimbt001]

My conundrum is that my tuner is recommending a flex tune to take advantage of the lower IATs I should be getting with the KC. Perhaps I’m wrong but I haven’t seen large performance gains from tuners over the ROUSH tune unless we go with E85, an upgraded fuel system, and injectors but my tuner says that he can address the drivability problems and improve performance. I’m trying to decide if a tuner flex tune is worth it or if I should stick with the ROUSH tune (hopefully the newer tune)?

 

[jhunt47]

My conundrum is that my tuner is recommending a flex tune to take advantage of the lower IATs I should be getting with the KC. Perhaps I’m wrong but I haven’t seen large performance gains from tuners over the ROUSH tune unless we go with E85, an upgraded fuel system, and injectors but my tuner says that he can address the drivability problems and improve performance. I’m trying to decide if a tuner flex tune is worth it or if I should stick with the ROUSH tune (hopefully the newer tune)?

Vmp and palm beach dyno showed improvements over the Roush tune. What tuner will do a flex tune on a forced induction vehicle I haven’t heard of any who will? A flex tune will more than likely need a fuel system upgrade as well.

 

[engineermike]

My conundrum is that my tuner is recommending a flex tune to take advantage of the lower IATs I should be getting with the KC….

This makes no sense. If you run E85 there is very little reason to install a KC.

Regarding aftermarket tunes, I believe there’s a little power roush left on the table with the cam timing and possibly lambda. Spark timing and throttle control look pretty good as supplied.

 

[brucelinc]

Cimbt001, please describe your drivability issue. Regardless of which Roush tune, I have found drivability to be near perfection. While I am sure performance will suffer at iat2 over 150, anything below that seems to make no difference.

 

[cimbt001]

Vmp and palm beach dyno showed improvements over the Roush tune. What tuner will do a flex tune on a forced induction vehicle I haven’t heard of any who will? A flex tune will more than likely need a fuel system upgrade as well.

Thank you for your help! Five Bar is my local tuner. I was thinking that I would go to either VMP or PBD when I go E85 anyway. BTW can you help me understand why wouldn’t a flex tune be appropriate for FI? Sorry for these basic questions - I’m a newbie.