First MPI Motor
OK...Ive always had carb motors and I just bought a 1996 252 Baja with an 05 7.4 MPI in it. Is it suppose to sound like its got a bad vacume leak every time you hit the throttle? Ive been told its the injection and they all do it. Sounds like hell and is there anyway to make it less noticeable...like shut it up.
signed "ole school" |
my '99 502's have done this since new
Actually more pronounced once I installed the K&N filters |
I guess I just have to live with it then .....or kick up the sub woofer :evilb: It has the stock filter and I was going to put a K&N on it...so its going to get worse?:readinghelp:
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Originally Posted by papawayne@comcas
(Post 2966365)
Sounds like hell and is there anyway to make it less noticeable...like shut it up.
signed "ole school" I just took out a customers 22 Donzi ZX for some prop testing after doing some work to it and it has the same noise. Your right it does sound like hell but it is a great setup though. |
Mine sounds like it's starving for more air, it's just weird!
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Sounds like an unsilenced air cleaner/spark arrestor. You guys must have really quiet exhaust systems. My EFI engines hiss when they are cold, or in gear at idle and the IAC's kick in, but not once I come off of idle. I have Holley injection and Gaffrig spark arrestors.
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Originally Posted by C_Spray
(Post 2967386)
Sounds like an unsilenced air cleaner/spark arrestor. You guys must have really quiet exhaust systems. My EFI engines hiss when they are cold, or in gear at idle and the IAC's kick in, but not once I come off of idle. I have Holley injection and Gaffrig spark arrestors.
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mpi
i am not too impressed w/merc,s early fuel injection.i had a 94mpi,502mag.after throwing alot of $$,and a new engine,i went back to a carb set-up.cheaper,simple,and best of all,i can work on it.it works for me.i did not see any diffrence in consumption.my advice on efi,is find a guy that is exprenced w,efi and performance boats and do not try to build up your motor.dont change anything.even the airbreather .just my 2cents.good luck
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