ATP Electronics - any experience?

[scam75]

I have a SciVision set up on my turbo. It works well. IIRC they were about £800 quid new back in the day. It has a fairly common Bosch MAF element and tube which you can get for about £100 quid now. There is also a little silver electrickery box which converts the MAF signal to AFM language. And there is also an adaptor flange for mating the MAF to the airbox once the AFM is removed (4 x 10mm bolts). There is a loom provided which connects the new MAF to the convertor box, and then connects back into the plug that used to reside in your AFM. There is one splice into the loom required for the signal wire. It was about 30 mins start to finish for the install.

When doing this avoid the cheapo generic Chinese MAF's which can be had for about £25 quid as they tend calculate slower and on my car that made the fuelling go a bit weird although on the plus side it only cost me £25 to identify the MAF element was goosed after I made it drink from a large puddle [&:]. The car at least ran and idled with the cheapo MAF and was back to rude health with a brand new Bosch MAF shortly after!!

Stuart

 

[blade7]

Does it also use a MAP sensor ?

 

[George Elliott]

No. The Sci Vision is a Mass Air flow meter (hot wire). Calculates volume of air using (a) temperature and (b) current draw to maintain wire heat. I got on OK with this system some years ago. Promax were helpful with it.

The other 2 methods are: AFM which has the "barn door" linked to the resistor and wiper arm. OK system except it wears out. The other method is MAP - manifold absolute pressure, again the volume flow is calculate by this figure together with the air temperature.

I have successfully re-tracked many AFM's, its a delicate job, but using an ohm metre you can scan the wiper very slowly and observe the resistance behaviour before and after, as you suggest Blade. (before will show erratic resistance)

Best solution long term for all this is Augtronic, they go the MAP route and future proof other improvements in the process.

George
944t

 

[blade7]

The Rogue M-Tune and Vitesse Racing MAF setups incorporate a MAP sensor. Augtronic can obviously charge what they like but when I added everything up including £500+ for them to map it I lost interest. If someone dynos it and gets amazing gains I'll reconsider.

 

[scam75]

Spot on George although its hot film it uses not hot wire.

Stuart

 

[944Turbo]

Not really a fair comparison, The Augtronic is a modern replacement ecu and replacement for AFM, Whereas the vitesse and rogue option replace the afm and a chip in the ECU.
The original ECU has proven pretty robust but there have been some failures over the years - so you could end up buying a vitesse or rogue kit and then need a new ECU as well. To get the very best from a Vitesse or rogue set up you will still need to spend time on the dyno.

I understand the Sci-vision takes the HFM-5 signal and translates it to provide a signal that the replicates the AFM. (IIRC the AFM is maxed - fully open - at about 3.500 rpm)

The Vitesse and the Rogue (though I know less about this option) both take a MAF signal and massage the ecu so it can use the MAF/MAP across the full throttle/load range like a more modern ecu.

Coming back on topic - no experience with ATP, they are not a million miles from EMC though, they may also have experience with them?

Tony