I wanted to know if anyone has used this kit?? Also where did you mount the new sensor. Installation looks easy but; where is the best place to mount??

thanks for the input

 

If you are referring to the intake air temp sensor, don't waste your time and money.

 

Yes I am.............I guess no good??

 

Its a minimal effect on air/fuel ratio or fuel inj pulse bandwidth. You can do this very easily yourself. Pull the MAT sensor and plug the hole. Add wire to the harness to lengthen it enough to reach the radiator shroud. Route wire around the wheel wells with other harness or plumbing. I drilled a hole in the lower shroud to stick the sensor in the fresh air before the condensor. It might give a 2% bump. To a stock engine its not noticable.

You get results with the "tune"
in the prom.

Not so much by lying to the ECM about whats going on.

 

On early C4's , that sensor is only used for EGR operation. It has no affect on calculating AFR.

 

Thats sorta accurate on certain models...which and why is a mystery since there seem to be different systems on the same yr models. Some were managed by an EGR time/temp switch that was the "trigger" while others used the MAT to trigger or allow EGR activation when the intake air temp met certain parameters along with some other sensor inputs.

Thats the cool thing about electronics and ECM control engines....in the time it takes me to type the word "type"...the ECM has gathered, sorted, compared and calculated several thousand bits of information and made a decision on multiple things. The idea behind the MAT relocate was to eliminate heatsoak from the plenum that really did effect the sensor giving it a reading that was not the true air temp. Thats entirely correct in the intent. Its the effect of the relocation thats questionable...does it really do anything? make a difference ? just depends on which system your car has and what other tuning details have an effect on your particular tune. On mine, I get a noticable difference if I allow that sensor to pick-up hot air. If it stays in the cold air there IS a smoother, crisper feel to the throttle response and it perform at 210* like it does at 180*. I can only attribute that to the ever so slight increase in fuel and/or when/if the EGR is active in the tune. I'd have to compare things while on scan to know for certain which or what was actually happening. All I DO know, something is different.

There IS another sensor "trick" that does have a real effect on any ECM engine....involving the o2 sensor and an adjustable output so that the sensors signal can be dialed up or down to provide false info to the ECM therefore getting the ECM to widen the inj bandwidth or narrow it for better economy or higher performance under any giver conditions. Like manually sending the o2 signal. A dial that can be mounted in the cabin somewhere to make adjustments to full rich or lean.
Not hard to do, I have the plan and necessary parts list somewhere that can be purchased from RattyO Shack and easily installed. Perhaps a 2-5% bump...but real and not imaginary due to psychological guilt over wasting money on some powerful marketing language...(the more you spend the better it works, cause ya don;t wanna feel like a dumbass for wasting $$ on aftermarket hype)

Believe me, seen it done it...

 

The MAT & EGR connection was a recent discovery by me.

In my BUA version of the EPROM with a 1227165 ECM, the MAT is used for EGR enable and not used for anything else.

I just took a quick look at the ANHT disassembly and it does the same thing: EGR only. I don't know offhand which ECM used the ANHT, but it is MAP, so it must be 1990 or later.