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PRO M 75mm Bullet - somebody help me

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Old 02-23-2005, 11:45 PM
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Dan89lx
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Default PRO M 75mm Bullet - somebody help me

Every since I put on my proM 75mm bullet the car has lost bottom end power, it is a 75mm unit with a sensor that looks exactly like a stock one- Why did I loose power? I was just looking on Corral and seen that others have the same problem. I have a K+N cone filter on- should I replace it with a stock box? I am frustrated, it would be so much easier just carburate that bit*h
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Old 02-23-2005, 11:47 PM
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86HOGT
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Default RE: PRO M 75mm Bullet - somebody help me

What's your engine built like? If it's stock...then you have just overkilled it with a 75mm MAF.
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Old 02-23-2005, 11:49 PM
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Default RE: PRO M 75mm Bullet - somebody help me

Nevermind...just read your sig...all I can think of right now is that when you build a motor to go fast in upper RPM ranges, you're going to lose some low end power.
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Old 02-24-2005, 01:41 AM
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Dan89lx
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Default RE: PRO M 75mm Bullet - somebody help me

true, but that MAF really hurt it on bottom end, it was good before. I liked the way it ran better with the stock MAF, i did notice that it runs a lot meaner before the motor gets hot as hell, I think that cone filter is screwing me up too sucking all that hot engine air
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Old 02-24-2005, 03:11 AM
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91hatchgt
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Default RE: PRO M 75mm Bullet - somebody help me

Get a fenderwell mount, and go with a 65-70MM TB unless you have some kind of power adder... That will take care of your bottom end and get cooler air into the engine...Good luck..
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Old 02-24-2005, 08:06 AM
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Deuce450
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Default RE: PRO M 75mm Bullet - somebody help me

Did you have the MAF cal. for a fender mount or a cone filter? I'm running a 75mm Pro-M with a 65mm TBw/EGR spacer , fender mount CAI and have no problem. My motor is completly stock.
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Old 02-24-2005, 10:10 AM
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86HOGT
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Default RE: PRO M 75mm Bullet - somebody help me

Dan, have you done anything to tune your car?
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Old 02-24-2005, 01:07 PM
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Obsol3te
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Default RE: PRO M 75mm Bullet - somebody help me

Did you match the MAF to your injectors?
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Old 02-24-2005, 05:01 PM
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philly3384
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Default RE: PRO M 75mm Bullet - somebody help me

whenever u get bigger injectors dont u have to recalibrate ur mass air meter to the size of the injectors?
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Old 02-24-2005, 09:54 PM
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Dan89lx
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Default RE: PRO M 75mm Bullet - somebody help me

everything is matched for #24, i got it used and the boy had 24's, i dont know if its calibrated to be used with a CAI or a stock box, I think there is a diffrence, right? It looks like a stock sensor on the MAF itself, i also have a thing called "the air adjuster", its just a little meter with a display telling how much air is being pulled through the maf, it was on there when i got the car. When i bought the car it had #24 injectors and a stock maf and that adjuster thing. Maybe i should take the sensor off of the maf that was on the car when i bought it and put it on the proM, something is fishy here because I know a pro m meter has a pro m sensor, doesnt it? I am confused.
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