Boost Controllers

[sam.ross]

I know about remapping our Roadsters for more power but I cannot seem to find any info on anyone who has used a boost controller to up the boost pressure.

Is there any reason for this, I.e is there maybe a sensor that doesn't allow it.

I know of the typical dangers of a boost controller but I know how to make one cost free and I am very tempted to try it out.

[pinger]

I think you'll find the ECU runs the show. Without exception. Any overboost will most likely put it into 'safe mode' - unless someone knows a way to circumvent this....
Remapping is the way to raise boost on smarts.

[sam.ross]

Man that's a bummer. I'm getting tired of the electrics in this car as I'm forever having to go to merc or a specialist and forking out on something electical.

There is a video on Youtube of a guy claiming to be boosting at 1.5 bar with a manual boost controller, kinda got my hopes up too lol seems ashame to have to pay for something that you don't need to on many other (turbo) cars :-/

[pinger]

Maybe it is possible Sam - I don't know for sure as I don't take that much interest in the remapping/raising boost side of things. For sure though, the remap with increased boost and tweaked fueling is the established tuning method for smarts. Doesn't necessarily mean it's the only method though. There are forum members here better qualified to advise.

[sam.ross]

I may just give it a try and see how it reacts although I do think you are right.

I wonder if you can reroute the sensor to the vacume hose that goes from the controller/valve to the actuator (seen as this part won't go over the 1 bar). Surely then the O2 sensor will pick up the extra flow of O2 and inject more fuel?!...

I'm only speculating here btw as I'm no mechanic, I just have a general knowlege of how a turbo works (which could be flawed) and as far as ecu's go i need schooled lol

Thanks for the reply btw

[Or_GazM]

I'm getting tired of the electrics in this car as I'm forever having to go to merc or a specialist and forking out on something electical.

Follow THIS thread....and research...
http://www.smartz.co.uk/showthread.p...rt-Diagnostics

3 or 4 visits to Merc, and you could be on a saver....

[JakeMM]

I think there'll probably be a limit to how far you can go, but you should be able to get some sort of gain before the electronics step in.

Go for it and let us know how you get on