Tired of blown MAFs! I go through a new Bosch unit every year. What does it take to switch to a Hitachi and is that the best fix???

 

Housing, wiring loom adapter and suitable tune.

 

or mafless file and forget all the other stuff

 

Nothing I could pull off here in California and be smog legal... I don't think???

 

The bad MAF could be left in place for visual?

 

exactly. simply unplug the maf from a complete stock setup.

 

I see you push this concept from time to time and I am curious what the advantage is on an otherwise stock motor or slightly modified motor? I could see on a highly modified motor where it could make some sense for sure. Is it correct to assume that the computer gets retuned to go to a speed density type format since there is no MAF anymore?thx

 

i dont push anything. i do however suggest it to those looking for an alternative to running a maf setup. todd at protomotive has perfected this style if tuning and even for a car with a simple tune the advantage is not having to worry about popping a maf and once the mods start. it opens up a new avenue of filter placement , engine bay arragement , etc. look to see just how many folks have maf issues or want to get colder air to the turbos from the start. its simple to do and the cost isnt any more than a tune in the first place.
its just my .02 and i have yet to see a downside to running mafless IF the tuner has knowledge of what he is doing

 

i wasnt trying to sound dickish, sorry about that. I was just curious about the rational behind it. So is it correct that the tuning goes to a speed density method for the fuel tables? would it pass emissions (non CA) with a sniffer type test?
sorry for high jacking thread OP

 

i dont actually know the specifics behind how the tuner does it. as for cali i have no idea about how their emissions is set up. from a visual standpoint you simply unplug it. do they even use sniffers anymore? in tn its a simple plug in. my file on my dme tells the computer the readiness monitors are either ready or n/a. thats all it looks for. i pass every yr on catless e85 and piggyback ecu

 

get a protomotive mafless tune bro dont waste time with the hitachi

 

Something is not right Rick. I would datalog the car and look at your hardware and your tune. Who's tune do you run? I have a built 3.8 race motor and have never once blown the OEM MAF and just about every shift is at redline as the engine is pretty much 100% operated at the track. My tune is scaled to operate slightly above the capacity of the MAF so the MAF is constantly getting pegged out. Again, not once have I blown a MAF in 6 years of owning the car. Why are some blowing MAFs while others have no issues? I'm not sure simply switching over to a Hitachi MAF is the solution. Something else is at play here.. Are you sure you are running the genuine Bosch OEM MAF and not some Chinese knockoff that may have been purchased on Ebay? The genuine Bosch unit is about $220 and I would purchase it though a reputable source.

I'd do a little research and trouble shooting before throwing in the towel and swapping over to mafless. Even through many praise it, it may not for everyone. I have driven and ridden in several mafless turbos at the track and was never impressed with the part throttle resolution and linearity. In my experience it's simply not as good compared to a well set up car running a MAF. One was a built 800+ hp Protomotive car and it was definitely the least user friendly but it also had some very large laggy turbos on it so it may not be a good comparison. Again, I'd go drive a few mafless setups to make sure it's what you want. Some tuners might also send you a trial mafless tune to try before committing. Good luck...

 

Thanks... probably the best advice I have gotten so far. I'm really not sure why they keep blowing. I don't even drive the car hard anymore. The last three years, I've drive it sane like the family SUV. It's a tiptronic car so RPMs rare get up over 2,000.

 

Yes it is. I've knocked my head into this wall in the past - tired of it.
Are you running a paper (OEM) air filter?

 

I'm running a NON-Oiled BMC in a Fabspeed open face airbox.