normalbloke

You'll enjoy that. My last Caterham was 400bhp.

mattie170

Sounds awesome, how much boost will you be running?

surfer_crx

If they don't use a MAP sensor what do they use? I was under the impression that most companies ditch MAF sensors in favour of MAP sensors.

MB

Alpha N tuning - no MAP needed.

If the MAP is there i'd use it though.

mattie170

I would defo use it. Maybe for a non boost application but with boost be silly not too.

MB

Yep or you will be relying on the assumption you have fixed boost per rpm, which you generally do with a SC, but any belt slip and you will be overfuelling plus the MAP takes care of ambient changes in air pressure.

surfer_crx

I would be wary of any company that wants to tune a car with tps based tables on an application that isn't both na and using itbs. I would always use speed density for forced induction.

EDIT

Also a point worthy of note, on a traction drive supercharger like the rotrex, the temperature of the oil makes a difference to the amount of boost generated and from datalogs I have it can be as much as 2psi.

mattie170

Partial throttle won't be nice! If its a track only car then it won't really matter

WF-S2K

The F20C engine is such a tight install in the Westfield, because of the engines height, and the low bonnet line, that there's literally no room for the factory MAP sender - it's the highest point in a Westfield.

Obviously, it could be relocated. But apparently, Westfield have gone with TTS & Omex's advice that it (the MAP sender) won't be necessary.

WF-S2K

Last saw your car a month or so ago, when I was down at the factory; was looking great, love the colour choice by the way. Congratulations, should be a cracker of a car!