Mythbuster: continuing project thread of my 1303 '75

[Wally]

Originally Posted by Sandeep

Fantastic developments Wally ! I always wondered what / how a splitter is / works ... looks pretty cool, and looking forward to see the video.

Are you talking about a seperate EBC other than the DTA ecu, or are you using the PID algorithm ? I thought you were using PID .... Hoping you hit 400 FWHP on the dyno

Best of luck.

Sandeep

Yes, I am pretty stoked its working properly. Its a stand-alone EBC (Gizzmo) after all, as I got tired playing with the settings in the DTA. The problem may have been the original volkswagen 1.8T N75-boost relais, not the DTA...
The boost relais supplied with the Gizzmo is very different and they claim its for better control. They might just be right. The original VW N75 relais may just be an on/off relais, while these are more easy to (PID) control.
I noticed the boost relais on DIYauto.com (?) looks a lot like it and I would advice to get that relais and try the DTA ecu-control again with that one.
There are so many variables which influence proper boost control, its not even funny... Other example: I changed out the original boost line from the relais to the compressor housing (very small inner diameter) to a bigger boost line and connected it to the boost box where all other lines come together: less boost at waste-gate setting!! The smaller line already caused a 0.25 bar boost drop, so inversely made boost better controllable (bigger line) by the EBC when it was working finally.

Still, the possibilties with the ecu are cool too. Especially the duty map (open loop) dependant on TPS and RPM is nice if you want half boost at half throttle for instance. No stand-alone EBC has that possibility afaik.

The vid had to be reloaded...just stoppd loading for some odd reason. I have had the spy camera mounted to the underside of the bumper aimed at the splitter and part of the Kamai...