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I would recommend the Roush tune, and then just add their pulley/tune when it becomes available. It should add another 2 psi and approximately 40 fwhp, according to everything I have heard. That should be good for at or around 400rwhp. That's what I plan to do.
I love the factory fit and finish of the Roush kit. Some of the other supercharger kit makers should spend more time in this area. KB has you cut sheet metal on your core support so you can dangle their dryer hose through it - give me a break. But yeah, they make the numbers. The Saleen blower looks nice at first glance, but rubs the hood liner and comes very close to the firewall (makes contact in a few cases) and has cheap hardware store looking brass fittings all over it. |
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Roush charger
When Roush offers the smaller pulley for the 05-06 to increase boost, will it require a new tune? Would you have to re-send the ECM to Roush or will they sell a programmer? I would think that this would require a progam adjustment since it would make the car run leaner.
What about if you change gearing? How can you get the speedometer corrected without screwing up the Roush codes? Again, does Roush have to do it, or can a shop make adjustments without messing up the Roush tune? I realize that any of this will void the warranty, so I will probably have to wait. I wish Roush would at least let me go with 3.73's without voiding the warranty! Thanks in advance for any input.
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2006 Redfire w auto tranny & 3.73 FRPP's Roushcharger w 2.57 pulley Steeda CAI and custom tune Roush 18"wheels and 285/275 Nittos
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![]() I don't know about the effects of gearing changes though, and I plan to keep my 3.55:1 ratio. ![]() |
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they will not tune your pcm with other upgrades to the car. i have tried they wont..if you change the gears the speedo will be off they could change it in the program but wont. i have headers,front and rear exhaust gears pullies,throttle body cold air kit and plasma booster for the coils and they will not adjust for any . my polished intercooled vortech goes on next week
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![]() Vortech T-Trim,V.T. forged motor,supercharger cams |
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Roushcharger
Randy B, I would be satisfied with the pulley and tune when/if they offer it. As you say, that's about all hp increase I would be comfortable with before changing internals.
But I certainly think they should offer speedometer tunes if you buy their gears and you own their s/c. The auto needs the 3.73's.
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2006 Redfire w auto tranny & 3.73 FRPP's Roushcharger w 2.57 pulley Steeda CAI and custom tune Roush 18"wheels and 285/275 Nittos
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New pulleys
I just heard that Roush in now offering 8, 10 and 12 boost pulleys that do not require re-flash. Warranty will of course be voided. This comes from someone at another forum who spoke directly to a Roush engineer.
I guess the program can adjust for the additional boost. I think I will call them myself tomorrow to chat. Now, if I can just run off another 33 thousand miles.
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2006 Redfire w auto tranny & 3.73 FRPP's Roushcharger w 2.57 pulley Steeda CAI and custom tune Roush 18"wheels and 285/275 Nittos
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My Roushcharger should be here any day now. ![]() |
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The compression in the engine is to high and the rods can not handle too much boost. Engine is 9.8 compression and would have to be 9.1 for that amount of boost. For normal street driving the stock roush package is great!!! I have to take it out just about everyday for a rip around just can't get enough of the wine of that s/c.lol. The cars you come upon come up real real fast as it is. If youre a serious about drag racing then put on the smaller pullies blow the engine then do it right
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The tune that is included with the Roushcharger is the max HP available safely without doing engine damage. A Ford dealer ordered the smaller pulley for a customer and the engine was blown in no time after installing it. Spring of 2007 Roush is releasing the new 4.6L 3V forged crate engines that will be built to withstand anything you can put to them. The engines are currently in the development program cars that are running the NMRA circuit this year. Anything over 430 HP at the flywheel is pushing the limitations of the factory engine on both internals and fuel supply. Face it if you want massive horsepower it costs massive $ to build the correct engine to handle the force. There have been many posts on the net about the 8+ boost cars and so far not many are still around without spare parts. The Roushcharger on the dyno at 7+ pds of boost without internal mods scattered parts as soon as it reached over 440 HP. Hope this gives everyone a little insight to how far you can go without doing internal mods.
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That's good news about the forged crate engines for those who want more hp eventually. I plan to keep the stock boost levels for a good while and then decide if I want to drop that kind of money into this car to go forged and up the boost. It's nice that parts will be available if and when that time comes.
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Roushcharger
I spoke with customer service today, and they have pulley option (top only) for a boost to 8 in development. Should be available in a month or two.
He said a differential change by current s/c owners would be covered by the Roush warranty if Ford offered the selection from the factory. Since I want a 3.73 with the auto, but that is not a factory Ford option, I am hosed, but the options offered by Ford for the manual are covered if someone wants to change. Anyway, that's the story today. It changes weekly, but I'm glad to see that they are offering options.
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2006 Redfire w auto tranny & 3.73 FRPP's Roushcharger w 2.57 pulley Steeda CAI and custom tune Roush 18"wheels and 285/275 Nittos
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The pulley bumps up boost by only about 2psi and does not require a reflash at all. Also, the HP ends up around 430-440 crank hp and does not "scatter your engine", although it will void the Roush warranty. I am also told that a couple of Roush owned mustangs that have been at a few, near Michigan, track events have been running the pulley since last season. |
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The stock 3V is a great engine BUT people need to be realistic of it's capabilities. People need to understand that Ford built a GREAT, not good, GREAT car for the money.. where else are you going to get a rear drive 300HP sports car for under $30K? Also remember the current Mustang is based on the same chassis as the current X-Type Jaguar and Lincoln LS. Ford did not design the car with the intention of having people run 15PSI and get 500RWHP and WARRANTY IT.
When I was at the Knott's show this year it was funny how many dyno queens there was at the show, meaning 05/06 Mustangs which where pushing over 540RWHP on the stock 3V. I even asked a few of them what their 1/4 Mile #'s where and got a real funny answer.. "Don't know...I only got those #s a few times.. when it was on the Dyno... I don't care to drive the car hard because I know it cannot take it" High Performance is like a game and there is an entrance fee to play..... depending on how hard you want play is going to determine how much you are going to pay. Play harder.. pay more... no way around it.
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Mike Mak TPS Motorsports Last edited by TPSMak : 05-17-2006 at 09:29 PM. |
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