Is the roush kit that bad?

[ugstang17]

30-50RWHP is typical of going LT's and deleting cats. Most of the pickup is in catalytic elimination. Already looked into this for 2020 as well.

I don't have FI just yet but plans for it when my factory warranty expires soon..one question..so how is it this roush 1 or 2 can put out numbers like that on a dyno but can't apply it to the street.?.or do some just have their NA putting out some big numbers..

I've explained some of that if you will take the time to read reply #4. Further proof that a dyno number is not an indicator of performance. Dynos are used to show power pick up compared to a baseline pull.

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[WhiteyDog]

I have absolutely no complaints with my Roush supercharger set-up. But then again I'm Lund tuned, made several improvements, and never had the Roush calibration. I wasn't having the warranty holding me back from getting the performance I wanted, so I wasn't going to fool around with some weak calibration. The only items that I have left from the stock Roush system is the head unit and intercooler. The car can't run any better than what it does. At any rpm, tip in, idle, or WOT. Needless to say I don't have any troubles with FBO cars. As I shouldn't.

 

[brucelinc]

I have absolutely no complaints with my Roush supercharger set-up. But then again I'm Lund tuned, made several improvements, and never had the Roush calibration. I wasn't having the warranty holding me back from getting the performance I wanted, so I wasn't going to fool around with some weak calibration. The only items that I have left from the stock Roush system is the head unit and intercooler. The car can't run any better than what it does. At any rpm, tip in, idle, or WOT. Needless to say I don't have any troubles with FBO cars. As I shouldn't.

The Roush set-up is notorious for heatsoak. I am not sure how a tune could correct that. Have you ever ran the quarter mile 3 times within a half hour timeframe? Typically, the Roush would get much slower with each run due to heatsoak. Higher ambient temps make the situation worse.

The Roush design of putting a small intercooler under the blower is contrary to what Whipple, Edelbrock and VMP are doing.

I would love to have the Roush but their design and resulting heatsoak is a concern.

 

[EgoBoost]

I have absolutely no complaints with my Roush supercharger set-up. The only items that I have left from the stock Roush system is the head unit and intercooler.

This is encouraging. Please tell what changes were made. Getting my Roush build ready for install.

 

[hlfbkd420]

Whitey doesn’t have a 18+ so heat isn’t as much of a big deal.

 

[Stymee]

Whitey doesn’t have a 18+ so heat isn’t as much of a big deal.

Exactly 15-17 cars r fine running a roush

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