CPS and overall power

chongzilla · Dec 29, 2015

Hello all,
I have an e99 4x4 that recently had a hard start issue. The problem ended up being a bad battery. The question I have is this. During my diagnosis of the hard start I swapped the Ford CPS for an Autozone CPS. Once the truck was back to normal I noticed the Autozone CPS has a signifigant reduction in overall power and performance of the truck. I'm running a TS 6 with canned tunes and the truck used to be kinda jumpy out of the hole but now it's much smoother with slower acceleration. Can the CPS really cause that much of a difference?

Arisley · Dec 29, 2015

All the CPS is, is a Hall effect sensor. Should have no bearing on power.

That being said, Autozone, or parts house sensors in general, are known to be junk.

Justin@DP-Tuner · Dec 29, 2015

Arisley said:
All the CPS is, is a Hall effect sensor. Should have no bearing on power.

That being said, Autozone, or parts house sensors in general, are known to be junk.

Pretty much.

The CPS mainly effects idle quality and the ability of the engine to keep running. Power is changed elsewhere.

I would go get a dark gray one from International. If the parts store one has not left you stranded yet, it will.