The Granatelli Motorsports MAF. How much performance will it give me?

 

Probably nothing, maybe 1 hp at the flywheel. Not worth the 300 dollars or whatever it costs.

 

Not much and it makes tuning harder from what I hear.

 

have either of you dyno'ed with one in your car???

 

no, but out of all the posts ive read on this board noone has shown dyno proof. And in an extreme situation you might get 3 hp. still not worth the price of an aftermarket maf in my opinion.

 

Your stock MAF is not a restriction, the way Granattelli tries to make more power is by telling the pcm that at high gps reading the engine is getting less air than it really is, this tricks the pcm into running the motor leaner than stock. Now the stock tuning is very rich so that can be a good thing, but it should be done through the pcm not by a MAF the pcm can contol it more precisely and you keep accurate sensor readings. Not to mention that if you combine it with other modes that tend to make things run leaner you can go too lean and BANG . Tuning cost less is more effective and precise and delivers so much more. Tricking the pcm is not a good thing gove it proper info and program it to use that info correctly.

 

Unfortunately I dont have poof...some one stole my laptop that has all my new dyno charts on it. But I only received 2.7 hp and I think it was 3 torque. I can't remember...but yeah, not worth the mod. I'm tring to find more poeple that have dynoed with the GMS but I cant find anyone .