whats the max hp the stock MAF can handle?

 

don't know, but I'm at 350whp right now on the stock maf. looking to break 400here in a week or two. I know the UTEC guys are putting down some serious numbers, some over 450whp

 

all UTEC's use the stock MAF?

 

The UTEC is a piggyback computer so it needs to MAF to monitor air coming in.

 

Yep.. UTEC currently uses the stock MAF..

The stock MAF will flow quite a bit of air, as the airflow reaches its maximum (which is around 3000hz or so) I think it can become unstable, in and of itself, its not a huge restriction and should be able to pass enough air for some of the bigger turbo cars, but it may not read consistently at that high an airflow rate at the highest boost these cars are running.

Some of the UTEC people are running MAF but their open loop fueling is governed by MAP which removes some of the flexibility that the MAF offers for different weather conditions, but it will provide a consistent reference signal for turbos moving enough air to "Confuse" the maf sensor.

I'd say you'd probably have to be around 500whp or so before the stock MAF will become an issue if you can tune the MAF.. I know even the stock airbox will flow enough air for 380whp or better..

Most of the people removing the MAF are doing it for technical reasons, either standalone conversion offers it, or there's some other need (in my case a blowthrough MAF setup was an experiment which had good results) But for most daily driven cars, I dont see any need to remove the MAF, even with most of the bigger turbo kits, I think with the GT35r turbo kits you begin to fall onto the cusp of whether or not the stock maf will be adequate.

 

whats that?

 

Its a MAF in the intercooler piping after the turbo and intercooler, before the throttle body.

Its pretty cool

 

IE has a 490whp evo (30) that runs perfect on the stock maf. Evotomig had a 550whp evo (35r) on the stock maf but had all kinds of problems, he thought they could be maf related but the rest of us thought he just needed to be more patient and work out the kinks. The car will run fine at 500whp with stock maf, maybe more.

 

I run 25psi on my everyday Evo with the stock MAF with no issues. At 30psi we put down 494whp with pump gas and alcohol. Before that on my 03 Evo we did 523whp at 30psi with C16 tune with zero issues with the MAF.

 

Being that its after the turbo and just before the throttle it gives a more accurate and allows you to now vent with your BOV. Malibu made a nice custom blow through MAF with a cobra MAF

 

My best 1/4 mile mph on the stock maf and 26lbs was a little over 121mph so far, I only have the one pass on the car (track was packed and nagging wife on the phone). I had a 2.1 60' b/c I had to back out of it b/c of wheelspin, made up over 32mph in the back half though.

 

Stock MAF here. I haven't had the ***** to try 30 psi on it yet. The highest I go is 27psi and no problems at all.

 

how much hp you guys running?

 

i ran 30psi stock turbo on the stock maf, ran just fine

 

hp is such a ambiguous way of looking at real power since dynos read all over the place. Track times/trap speeds are a much better indicator. If the trap speed calculators are accurate at all I make about 500 hp which is 228 over stock.

Holy ****. I didnt even think the stock turbo would boost that high. I guess I can get away with it then, but will it give me 30 more hp is the question