Greetings, folks.
I've finally got my Van Diemen RF98 Honda on the track, and for the most part, everything is running great, but I'm wondering about a couple of things.
First of all, the engine stumbles when you first open the throttle from idle. It's not bad once everything is fully warmed, but when the car is first started, the engine will die if you open the throttle unless you're very, very careful. Has anyone got any ideas on what might be causing that? The engine assembly manual makes particular note of the calibration of the throttle position sensor (TPS) and I'm wondering if that's the likely culprit.
And can the other engine sensors be easily tested, or is it a matter of simply replacing if you suspect that they might be bad?
I'm not actually concerned with the engine's performance at the moment. One of the other guys in the club has a pretty fresh Loyning engine and we seemed pretty equal (I'm running the 30.5mm restrictor per SCCA rules). A little reading in this section of ApexSpeed suggests that a dark exhaust pipe is normal, is that right?
Anyway, any and all thoughts, opinions and advice very gratefully accepted.