Supercharged 05 Mustang GT ,Looking for more! - Ford Mustang Forum
 
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post #1 of 14 (permalink) Old 09-19-2010 Thread Starter
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Supercharged 05 Mustang GT ,Looking for more!

I have a m90 roush supercharged stang.Looking for more (50hp).Does adding a twin fuel pump require a new tune?If not will it increase power on its own? Any one change there cams on a supercharged setup? Looking to eventually get re-tuned after a few upgrades,(fuel pumps,throttle body,cams) Thanks for the help!

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post #2 of 14 (permalink) Old 09-19-2010
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You will not get the full benefit of the GT500 pumps without a tune update. I installed mine a couple of months before my supercharger without doing a thing to the tune and the car ran fine. When I put the supercharger on my tune was then set up for it. I think you can up the boost a little on the M90 but I'm not sure. I know it is somewhat limited on what it put out. I believe you can squeeze 50 hp with the right parts though. You are definitely on the right track. I would definitely consider more boost, mild blower cams, long tubes, fuel upgrade, and custom tuning.


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post #3 of 14 (permalink) Old 09-19-2010
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Fuel pump is a foundation mod and esssential for upping the horsepower ANY at this point. You most economic route would be increaseing boost. After that I know it costs ABOUT $1600 for a set of good installed longtubes. You are going to spend about $1300 if you have your fuel pump installed and dyno'd if it's your first time getting a tune because they have to make it from scratch. It's cheaper to tune after it's made. So your looking at a pulley change for your blower and possibly a reinforced belt tensioner. If you can cool down the air you will find that 50hp easier to get to. Options are out there, intercooler, water-meth kit. Those longtubes along with giving you horsepower have the added benefit of releaving pressure off your motor (healthy), plus they will sound cool, but are pricey trying to get 50hp IMO, though I would love some. Honestly the cheapest way would be a water/meth kit, boost pooley and dyno. I think there is more to horsepower numbers though, I mean how is the car to drive? How does it sound? How is atmosphere inside the car (gauge clusters, shifter)? Sorry I'm rambling and your just trying to get 50hp.
 
post #4 of 14 (permalink) Old 09-19-2010
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As mentioned you will need a fuel system upgrade especially if you are adding cams. With a set of cams, long-tubes, and fuel system upgrade - and a tune to make all of these work for you you should easily get 50 extra HP.

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post #5 of 14 (permalink) Old 09-19-2010 Thread Starter
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I should have listed my up grades to date:2005 mustang gt, BBK long tubes & mid pipes,roush supercharger,bbr boost pully, steeda cold air & shifter,ford racing springs,steeda lower control arms (relocated) ...........

Last edited by attisk; 09-19-2010 at 02:24 PM. Reason: ?
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post #6 of 14 (permalink) Old 09-19-2010
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Quote:
Originally Posted by attisk View Post
I should have listed my up grades to date:2005 mustang gt, BBK long tubes & mid pipes,roush supercharger,bbr boost pully, steeda cold air & shifter,ford racing springs,steeda lower control arms (relocated) ...........
I would say go for the GT500 fuel system, then if you can swap your s/c pulley for a size smaller, and get it tuned. They should be able to squeze 20-30 hp easily maybe more. Im not too familiar with your supercharger, but the fuel system will keep it safer in the long run.

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post #7 of 14 (permalink) Old 09-19-2010
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Wow, yeah, that's different you already having all those mods. What is your rwhp at now? So you obviously have already had it dynotuned or you would have major issues. Is your engine forged? If not squeezing 50 more might blow it (I am putting you at 420 rwhp). I am having a hard time believing you even have those mods and have had a safe a/f with a dyno tune with the stock pump. Water/meth kit if your even able to safely put 50more horses down. If you go with more boost you might have to convert over to a 8rib. If you go cams with anything worth while VSR or SPR from comp cams for example, then your gonna pay a penny at least for the valve springs minimum...unless you can do it yourself but you wouldn't be able to drive it without a dynotune with a real cam, safely anyway.
post #8 of 14 (permalink) Old 09-19-2010
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I also didn't realize you had those mods. That changes everything. If you want 50 more hp then take the M90 off and replace it with a TVS blower if you want to keep it Roush. The Roush TVS comes with a 3" pulley which is too much for the stock shortblock imo. You can use underdrive pulleys with it to reduce the boost and get it safer. I think Tillmans can set this up for you. If you don't want to keep it Roush, then look at the Edelbrock, Whipple, Saleen, or Kenne Bell to replace the M90. Any of these are capable of giving your stock shortblock all it can handle.

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post #9 of 14 (permalink) Old 09-19-2010 Thread Starter
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It was tuned and dynod with these mods at 412 hp...tuner said stock pump was at 85%???
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Get some dual pumps and an Overdrive crank pulley to add some more boost. Also maybe a bigger heat exchanger to keep your air temps lower.

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Just curious, your car an automatic?
post #12 of 14 (permalink) Old 09-20-2010 Thread Starter
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No its a 5 speed
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Quote:
Originally Posted by jaja6009 View Post
Get some dual pumps and an Overdrive crank pulley to add some more boost. Also maybe a bigger heat exchanger to keep your air temps lower.
Good choices,but if you overdrive the crank you`ll have to upgrade the belt tensioner,or you`ll destroy belts.I used Thump RRR racing tensioner,but UPR makes a good one for a lot less $.

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Edelbrock also makes a great solid steel belt tensioner

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