MAF Sensor Position? (Turbo)
 

Has anyone tried placing the MAF in a different location with a turbo application (Greddy)?

Would this in any way make the vehicle run better?

If so how?

anyone?

There are a few people that have played with a "blow through" arrangement on the MAF.

There is no reason it won't work, but the MAF is very sensitive and it will require a very carefully constructed tube, just like it does for a "draw-through" arrangement.

I don't think its worth the effort.

Too damn sensitive

Actually, if you look at the limited space for a straight tube in the engine bay, then compare it to what you can get with a vertical tube to the intake manifold, you might in fact have more room to play with since the vertical tube actually extends beyond the engine bay as it goes down towards the intercooler. But I haven't measured, and my mind is known to have a distorted sense of reality sometimes :)

wonder what the temp sensor would do to afr in a blow through position ????

Not really. Its just very accurate.
It needs to be if you want the car to run well.

Exactly what you would want it to do, which is why mine is located there.

^^ You running another IAT sensor?

Yes.
I have the IAT from a Mazda KL motor VAF just before the BOV.
It has the same electrical characteristics as the OE RX-8 IAT sensor.

I see...I have one just before the throttle body.

I have a KL one in the garage somewhere..might have to check that out

let me get this straight - you have intercepted the wires from the stock IAT sensor and redirected them to another sensor ?

What is a kl motor ?

KL engine = MX series engines....MX-3 and MX-6 Probe etc.

Likely he had one laying around from his old car projects......

I have a GM sensor that I use on the INTx....

Yes. Didn't I post this up somewhere?

Its a family of V6 motors that Mazda put in several cars in the 90's.
In its 2.5 liter form, it was in the MX-6, 626, 929, Millennia and the Ford Probe.
It was also available as a 1.8 liter (the world's smallest production V6) in the MX-3.
It use a VAF (Vane Air Flow meter), which had a center plunger, instead of a hot-wire like our MAF.

You would have to gut the meter to remove the temperature element.

/\ i missed it if you did . Thanks for that info - just what I needed

did you post a diy for this ?

Jeff...can the IAT be reconfigured in the AP to go with a 0-5v signal? What is the specs on the KL/stock sensor?

I thought I did. Looking for it now...

Yeah, the AP can rescale the IAT to 5v.

The KL sensor has the same curve as the OE IAT.

https://www.rx8club.com/attachment.p...1&d=1229889334

https://www.rx8club.com/attachment.p...1&d=1229889334

That was actually a dumb question ;) OH WELL..THE BRAIN WASN'T WORKING :)

Went to a wreckers and he found something that looks like a large one way check valve - the sensor is embedded inside it . Robbing sob wants $75 for it ...
Do i just hack that to bits to get the sensor out ?

It looks like a 3" diameter pipe with a conical plunger inside on a spring.
You cut the plug out of the housing (cut the housing, not the base of the plug itself.
I'll try to grab some pics this week.

/\ yeah that sounds like what he showed me .
The sensor housing inside is an aerofoil shape - can't think how you got that to seal in your intake tube ?

Here is the part:

https://www.rx8club.com/attachment.p...1&d=1229895241

When you cut it out of the housing along the red line, the connector will come out with a "pistol" shaped probe on the end.

It is sealed to the charge tube by cutting a hole that is shaped like the sensor, gasketing it and than clamping a "door" plate over the flange that remains by cutting the sensor from the housing along the red line.

Wow - this is good info; if you have a DIY I would love to see it.

Barney Style of course; Jeff knows how I feel about wiring...

I guess you're looking at it.
I'll ad info as I can generate it.

ok got it . I presume i should get the plug that comes with the sensor to make the wireing easy .

Wonder if getting a stock rx8 one and cutting that up would be easier .....