Lizard928

I don't even like how out of the stream Johns sensor is.
Try to get it as much in the stream as possible.

And use one with a plastic non encased pickup for faster response time.
Don't use a bronze totally enclosed clt sensor for this!

Mike Simard

I use a Bosch 0 280 130 039 which has the plastic tip. It's listed on the Bosch Motorsports site so it's known to ECU companies and has data available.

Regardless of which sensor is used I think it's helpful to be out of the engine compartment and in a calm place where it measures ambient air only. For NA engines there's no reason to chase quick AIT readings. Hot starts can be handled just fine with the ECU's settings and trying to have the AIT sensor see realtime temps is fruitless.

Ed MD, awesome looking engine compartment!

GregBBRD

Andy:

The sensor on the left of the airbox is actually the stock sensor for the cooling fan.

The intake air temp sensor is a high tech "Link" piece that is screwed into the floor of the airbox.

Z

I agree, but even like that, John's is an absolutely huge improvement over Andy's set up. That one is about an absolute worst case example, and has several different things done very poorly.

If it were me, I'd definitely correct that as soon as possible, and not drive the car very hard at all until it was corrected. That current configuration has the potential for resulting in a blown engine because of it.

Z

That's better than what Andy was indicating the configuration was.

Link uses either a Bosch or a General Motors intake air temperature sensor. The Bosch is like the one that John posted a picture of. The GM one is used by a number of aftermarket ECUs, and is stock on a huge number of GM cars. The Bosch sensor is better, but the GM one is cheaper and easier to mount for a lot of people.

andy-gts

thanks for the clarification Greg, I think I will stick to making the box and move the sensor for ambient air as greg and mike and you guys suggest....thanks tons...
IN effect then, the engine has been pulling timing based on high ambient air temps I see more horse power in the future. when I replace the tps , do the box and wrap the intake I should be able to make it more efficient in the daily life of this 928!!!

the tps had high degrees of error above 5000 rpm on the last dyno tune and so the fuel was less than accurate . but its winter and it all can be tweaked during the next couple months..

thanks again for all the input...you guys are terrific..

andy