Question for guys who actually have the the Roush Kit

[Jmtoast]

Got into a nice run with a hellcat Charger. Wasn't sure if it was cop (Mi state cops drive blue chargers and it was after dark) but when he blasted past me, as i tried to get beside him, I saw the hellcat on the side. He slows down and he gets beside me and we both take off. I get the jump but with his torque he comes back up on me immediately and then the A10 starts ripping off gears (sport mode) and I start to very slowly leave him. Unfortunately there was traffic up ahead and i was approaching my 123mph speed limiter so i had to let off. Guy was very cool and his car sounded much better than any hellcat I've ever heard. Exhaust was loud as fuck. Was certainly not stock.

Made up for earlier when I tried to do some 0-60 runs and the nannies kept kicking in even though I had it in drag mode and had both Advanced trac and etc off. Car was literally cutting power top the wheels. Not sure why it was doing that but from past experience when stock it isn't a Roush thing.

 

[JasinEdward]

I haven’t run 1/2 mile banzai runs or multiple 1/4 mile hits run after run on the street but when I made a 1/4 mile hit in Mexico my IAT2’s dropped?

This was 1 hit, not repeated hits. I believe Bruce said his IAT2 dropped racing his car too.

I can go part throttle... like 3/4 and be accelerating quick and see the temps go down... but if im wot they will go up. Id be curious to see 3 back to back runs to 120 to see what they do. You guys have newer kits, but the same ltr i have.... only difference is the tune

 

[hlfbkd420]

I haven’t run 1/2 mile banzai runs or multiple 1/4 mile hits run after run on the street but when I made a 1/4 mile hit in Mexico my IAT2’s dropped?

This was 1 hit, not repeated hits. I believe Bruce said his IAT2 dropped racing his car too.

log two back to back 60-130 runs and get back with me. Hell. Drive your car 30 miles and punch it at 40. I guarantee at 130mph your temps go up.

 

[hlfbkd420]

I can go part throttle... like 3/4 and be accelerating quick and see the temps go down... but if im wot they will go up. Id be curious to see 3 back to back runs to 120 to see what they do. You guys have newer kits, but the same ltr i have.... only difference is the tune

the difference is you have raced yours

 

[Jmtoast]

I can go part throttle... like 3/4 and be accelerating quick and see the temps go down... but if im wot they will go up. Id be curious to see 3 back to back runs to 120 to see what they do. You guys have newer kits, but the same ltr i have.... only difference is the tune

Yeah I don’t see a difference between phase 1 temps and phase 2 temps with the same ltr. Only difference i see is the amount of timing pulled.
]

 

[Stymee]

Yeah I don’t see a difference between phase 1 temps and phase 2 temps with the same ltr. Only difference i see is the amount of timing pulled.
]

I never had P1, all I can report is what I see
There’s no doubt back to back hits will cause what u guys say, I don’t and won’t ever do that, I make a hit and then drive the car for a while. I may never do another hit that day?

I’m not into constant hits, never was with any cars I owned. So for me it’s 1 hit and relax and from what I see my IAT2 don’t tend to climb

I’ll race my when it becomes feasible, hell Atco’s only been open for 3-4 weeks this yr. Right now it’s soup in Pa, not interested in siting inline with a bunch of Mazda’s, Honda’s and Goons just to get 1-2 passes in 100 degree heat.

 

[Jmtoast]

I never had P1, all I can report is what I see
There’s no doubt back to back hits will cause what u guys say, I don’t and won’t ever do that, I make a hit and then drive the car for a while. I may never do another hit that day?

I’m not into constant hits, never was with any cars I owned. So for me it’s 1 hit and relax and from what I see my IAT2 don’t tend to climb

I’ll race my when it becomes feasible, hell Atco’s only been open for 3-4 weeks this yr. Right now it’s soup in Pa, not interested in siting inline with a bunch of Mazda’s, Honda’s and Goons just to get 1-2 passes in 100 degree heat.

highest I have seen it was 146 on a 94 degree day after 45 mins of very hard driving. Wasn’t back to wots. I stopped monitoring iat2s because I See no affect.

 

[brucelinc]

I do not do back to back WOT runs to the 120s....at least not in hot weather. However, I absolutely see temps drop under WOT. At the strip in 80 degree weather, start up after sitting 20 minutes or so, I saw 155 iat2. Once started and running while waiting in the staging lanes, it was around 135 with fans running. Through the traps at 126 MPH, it was 128. I had the same scenario in 65 degree temps only everything was a few degrees lower. Cruising down the Interstate at 80 MPH, it usually runs around 40 over iat1.

Things might be different in 100-120 degree temps like in Arizona. I cannot imagine EVER seeing 160 iat2 in my area when the car is running and moving.

 

[brucelinc]

Another thought: In the scenarios I posted above, my iat2s were higher than normal due to sitting and idling. That could be why I saw a drop when finally moving at WOT.

I have never been just cruising along at 60 mph and gone WOT to 120. It is possible they would go up in that case. They definately go down at throttle opening short of WOT, though.

 

[AZ18yote]

I do not do back to back WOT runs to the 120s....at least not in hot weather. However, I absolutely see temps drop under WOT. At the strip in 80 degree weather, start up after sitting 20 minutes or so, I saw 155 iat2. Once started and running while waiting in the staging lanes, it was around 135 with fans running. Through the traps at 126 MPH, it was 128. I had the same scenario in 65 degree temps only everything was a few degrees lower. Cruising down the Interstate at 80 MPH, it usually runs around 40 over iat1.

Things might be different in 100-120 degree temps like in Arizona. I cannot imagine EVER seeing 160 iat2 in my area when the car is running and moving.

Personally here in AZ I won't typically hit the track out of season due to the temps unless special occasion or something. That's NA running e. With any boosted application though, I couldn't rationalize it. Seems like it would be a nuclear meltdown lol. But that cool dry air come Nov-Jan....

Would be curious if @hlfbkd420 has run it at the track in the inferno though.

 

[brucelinc]

Much over 80 degrees and I usually do not go to the track. Even when NA, I would see 2-3 tenths worse results in heat and humidity than in cool and dry. I think the heavy, muggy and humid air here hurts almost as much as the higher temps.

 

[hlfbkd420]

Personally here in AZ I won't typically hit the track out of season due to the temps unless special occasion or something. That's NA running e. With any boosted application though, I couldn't rationalize it. Seems like it would be a nuclear meltdown lol. But that cool dry air come Nov-Jan....

Would be curious if @hlfbkd420 has run it at the track in the inferno though.

I haven't yet with P2. I have P1 though. My trap speeds dropped significantly because it was hitting 160 degree IAT2's and closing the throttle blade. Best MPH with P1 was 124 in February temps. In June and July the traps were between 115 and 118.

If the tracks are open, I plan on going when I return to Phoenix in August.

 

[engineermike]

I’ve been looking at the roush cal, but keep in mind I’m new at this. I can’t find torque management that cuts throttle due to MCT. However, I did find that it will cut throttle for “exhaust temperature protection”. The roush cal calculates the exhaust manifold and cat temps. Manifold protection kicks in at 1580 f while cat protection isn’t until 1650 f. Could this be the cause of closing the throttle at high MCT?

 

[Jmtoast]

I’ve been looking at the roush cal, but keep in mind I’m new at this. I can’t find torque management that cuts throttle due to MCT. However, I did find that it will cut throttle for “exhaust temperature protection”. The roush cal calculates the exhaust manifold and cat temps. Manifold protection kicks in at 1580 f while cat protection isn’t until 1650 f. Could this be the cause of closing the throttle at high MCT?

What's mct?

 

[Stymee]

What's mct?

Just a guess
Manifold/Cat Temp?