I am considering buying an autothority maf for a discounted price. I know they arent the best ones out there but this is a pretty good deal. Has anyone dyned a car with one on? Also my car is stock right now but i plan on getting a testpipe and wastegate. Will the maf work well with these upgardes?
Thanks

 

If you don't have any vacuum leaks and your WG is working, you should get about 240 hp and 275 ft-lbs. This will be the cheapest hp gain/$. Every other mod will have a higher cost per hp.

 

Whoever told you they aren't the best is on crack. They seem to work right out of the box and don't need any controllers or temp sensors. They still are the best in my mind. Ofcourse if you keep adding newer mods, you should really get it dyno-tuned again.
Raj

 

I have the APE MAF with stage II chips. Along with the LBE and a test pipe, I saw 240rwhp and 276lb-ft..

 

Daniel: The APE MAF with chips are set at 15psi correct?? and those numbers were on a K26/6 as well?

 

LBE was set 15psi (it seemed to allow boost to build a little quicker though) and it is a k26/6


Of course, now my WG is shot and it bleeds boost like drunk sailor bleeds $20s in a strip bar.......

Please note that the hp curve and TQ curve on different scales......275lb-ft shares the same line as 250hp.

 

hmm only 240hp... maybe i should just get the vitesse chip and get 235hp for way less money. Thanks for the input thou guys

 

At least the MAF (or MAP) intake system would help you benifit a new (bigger) turbocharger's full potential (along with the other usual bolt on's). It's the foundation for upgrades.....

 

The MAF doesn't add much other than potential. With the stock turbo, there is only a small difference. If you know you'll be getting a larger turbo, the MAF is a good idea. If you don't know or it may be a while, you'd probably be better off with a good set of chips, test pipe, DPWG, and MBC.

 

You're not going to get much more from the stock turbo. I think, ~260rwhp is the most I've heard of from the stock turbo at higher boost levels.. And that's pushing it.

 

The Swede,
I have a custom maf with a smt piggy back system and can tell you that you will not gain power but will get better response if you have a big turbo. If you have a k26/6 you have good response so I suggest going with a good set of chips, a much better bang for the buck.

If you decide on the Autothority maf I think 968turboS said it right. Adjustable mafs are as good as the chip they work with so dont think you have a wide spectrum for tuning like a stand alone. If your chip is not right you will have to go to the dyno, have the chip re mapped and then you can fine tune with an ajustable maf. Autothority is a good system with standard applications like yours.

 

I personally wouldn't do the MAF until you do the turbo. Get some good chips (like from John at Vitesse) and a manual or electronic boost controller. The stock intake can support that amount of additional horsepower due to increased boost and tuning.

 

The APE MAF is excellent. The only downside is that it runs out of calibration at around 340 RWHP. At this point, it is hitting 96% duty cycle - any more air and all it does is launch a bunch of fuel into the mix, making it very difficult to control.
This is NOT my opinion, I have datalogged the APE MAF, and it is a FACT.

 

I made 270HP, and 310lbs with the APE MAF, and few other mods on a 26/6.

Special tool, anyway you can send me the output file. When I data logged the V-in, if I remember it reached ~4v. I think 5v is max, and would like to see what that translates to in HP.
Thanks

 

Sorry - I didn't keep it, I just remember it plateaud at 96-97% and wouldn't go higher. It is also exponential, so there is a formula for it that I don't know - no linear conversion.

Anyone that has one can plug it into any 0-5 volt logger to see it (but you need a pretty bad-*** turbo to push it up that high ). I sold mine to "gotmeaporsche"