another "thinking about pro-charging" thread
#1
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got a 502magmpi with 200 hours
i really like the idea of the m-1sc procharger.
what are some gotcha's?
do i need to change out the exhaust first? (new stock exhaust is on)
is this a self install kit?? (i'm fairly handy with tools)
i see it does NOT require ECM re-programming - i'm not sure i understand why not?
i don't hammer the throttle --so i build up my speed some what slowly - with 200 hours on my 502 -how many hours should i expect it to last? (all things being equal)
the website claims i may see an increase in gas mileage -- is that really true?
thoughts?
what about props? i'm currently spinning a 4 blade 24p and hitting about 5200 max rpm's
Mark
i really like the idea of the m-1sc procharger.
what are some gotcha's?
do i need to change out the exhaust first? (new stock exhaust is on)
is this a self install kit?? (i'm fairly handy with tools)
i see it does NOT require ECM re-programming - i'm not sure i understand why not?
i don't hammer the throttle --so i build up my speed some what slowly - with 200 hours on my 502 -how many hours should i expect it to last? (all things being equal)
the website claims i may see an increase in gas mileage -- is that really true?
thoughts?
what about props? i'm currently spinning a 4 blade 24p and hitting about 5200 max rpm's
Mark
Last edited by CHAOS REIGNS; 08-01-2007 at 09:52 AM.
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I have a very nice used one overhauled by Procharger only 100hour ago and a fresh water only intercooler with 2 seasons on it.
I will sell it for a very fair price.
You will need a fual pump upgrade and a regulator to properly install any blower on the stock MPI.
I will sell it for a very fair price.
You will need a fual pump upgrade and a regulator to properly install any blower on the stock MPI.
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I have an m-1 installed on a built up 7.4. Makes lots of power. I would take the exhaust through the transom. I started with stock headers (through hull) and then went to gill. Your internals are good with the stock 502. If you don't modify anything else (including cam) then you can get by with out an ECU change. Talk to C.P. about their ecu up grades for procharger. You should expect at least 4" on the prop. SC is a good choice but the M-1 is ok too. Don't go beyond 5PSI unless you plan on up grading your pistons. You may blow a head gasket or intake so replacing ahead of install is good if you have the option. Get the biggest intercooler. Make sure if you buy used that the system is for your block, brackets ect,
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I was thinking about doing my 502 mag and a VERY knowledgeable person said the best way is to install bigger injectors and have the ECM reprogrammed. You would also need bigger fuel pump and fuel lines. A lot less tuning headaches than just cranking up the fuel pressure.
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Have running buddy with 2 - 454's mpi's with m1 procharger. This weekend he told me he has almost 300hrs with prochargers on these motors. Both motors are still in good condition and going strong. He would do the same again with out question. I am not sure but I do not think the computer was reprogrammed or injectors changed out.
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I blew my first hopped up engine because I did not increase the injectors (stock 7.4 MPI 24#s very bad) and had three changes to the ecu. Your 502 injectors are 42#s which is what I went to with the second hop-up. Dustin Whipple did my "in the boat" ecu re- program and the 42's have a conservative duty cycle with 52#s @ WOT. A solid A/F of 12 throughout. Mag internals with Merlin heads. I would go with the procharger recommendations including replacing the fuel pump with an aeromotive 1000 and insert an external two stage regulator. You should be fine. Keep the revs well away from the rev limiter set point as it cuts fuel (very dangerous).
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thanks for the info guy's. I plan on keeping the boost low -- i'm really just looking to gain about 6 or 7mph. Just get me up into the mid 70's with some realiable power.
my exhaust is thru hull -- with silent choice -- however it is the stock exhaust.
I like the m-1sc because it looks like a very clean install and not very intrusive -- if i wanted to take it off later.
my exhaust is thru hull -- with silent choice -- however it is the stock exhaust.
I like the m-1sc because it looks like a very clean install and not very intrusive -- if i wanted to take it off later.
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Do a search on all the P/C threads. You will find all kinds of useful info. Definitely do the fuel system and ecm upgrade or don't do it at all. Keep the boost under 5psi on the stock manifolds. Also replace the head gaskets before you install it. Head studs are recommended. They are badass but it ain't cheap.