whats everyone's thoughts on this? is it worth doing on a stock turbo with FMIC? looks you'd almost have to use a 300zx MAFS b/c of the shape. i understand its benificial to those who want to make decent power, but would it hinder to have it on a stock setup(for the time being)?

i dunno

i guess you'd either have to mount the blow off valve under the charge (cold) pipe down in the tire well or should it just be mounted on the hotpipe?

 

why the hell do you want to run a blow through mafs ?

just run a factory intake pipe like 90% of the people

blow thru mafs is for people who dont have a clue or something.

youve seen the way i do swaps at ss with front mounts taylor, just do it like that.

 

ive seen how ive always done swaps


but those car didnt have relocated MAF like mine

 

IB mattback realizes hes a girl

 

in japan alot of sr's run the z32 maf blow threw style since the air comming into the turbo has less restriction when it is compressing , It is very possible and a smart idea , I asked taka to tell me what i was looking at in some of the japanize mag;s and he explained it and it is exactly like the gm blow threws that the dsm guy dsm gus are running now...

 

blow through MAF is good provided the MAF doesnt leak. Z-32 MAFS can be used in this arrangement fairly well, however they are a bit bigger than you realize, and finding a straight piece of pipe on a FMIC kit to mount it on is a bit of a challenge. not to mention most FMIC piping is 70mm and the Z32 MAF is 80mm internal (~84mm external) so you are going to need a couple of 70-80 mm reducers to make it work. or you could just ghetto rig it with straight couplers and t-bolt clamps. it does have the advantage of mounting the BOV before the MAF. this eliminates any problems associated with open atmospheric BOV....almost. as compressed air between the TB plate and the MAF decompresses to exit out the BOV you will have a mass flow backwards over the MAF creating some richness...but not nearly as much as a standard draw thourgh maf would offer.

it really seems like the only advantage is to be able to run open BOV with no worries. but that can be fixed for less time and the same $$ by just doing a s-afc2 and calibrating the deceleration air correction correctly.

I dont see the sensor posing THAT much restriction when placed before the turbo. especially at the power levels that most people are running SR's at. i mean look at it....it's a 80mm opening, with a small stick inside it!! the air has to neck down to smaller areas than that just to get into the turbo.

lastly, it hink you can get better responsiveness by locating the BOV as close to the TB as possible rather than locating the MAF as close to the TB as possible. keep the column of air moving between shifts...thats a big key to response.

 

cant rom tuning also get rid of open air bov problems?

 

i am experimenting with it...but it doenst look promising. my option would be to lean the hell out of the areas in the ROM that coincide with the RPMs and Airflow levels that car is seeing during the time that the BOV is open. the problem is that the ECU is seeing an airflow level that is usually seen at a normal driving condition...so as a result the car would have horribly lean spots that would make driveability horrible. the only other thing i can try is maybe seeing if i can access a zero throttle map...but i dont think i can.

 

my only concern with this is the fact that my MAFS is on the throttle body side and i really dont want to go through the hassle of relocating it again. but if i have to, i guess i will. i was just curious if it was going to be MORE of a PITA to make it work than to relocate it again.

so i guess i should just relocate the MAFS and go normal style. i fiugred it would clean up the engine bay just having a filter on the turbo and keeping the MAF where its at.

i suppose i cant make an S14 KA MAFS to work either can i? its a smaller size, similar to the intercooler piping and it, too, is easy to convert to have a coupler slipped onto both ends. but it prob works on a different voltage range so i couldnt use it on an SR computer.

 

so lets see:

drama of relocating mafs < soldering three wires 3 feet longer


wow.

it makes so much sense.