Is a VE value of ~30 at idle to low?


I'm still dialing mine in, but I'm at 29 on my ClassicECU/Speeduino (stock injectors and 2.5bar FPR), so 30 doesn't seem crazy. If anything I expect to go lower once I'm more dialed in, as I'm running rich and fast right now, even at only 6 deg of advance ...

I’m using a fuel pressure sensor. In theory the standalone reads actual fuel pressure and compensates accordingly. I’m also using the built in injector configurations for my Siemens injectors, which means the standalone deals with deadtimes.

But after your suggestion I’ll switch everything back ...

What standalone? In my 2.6 turbo mitsu running megasquirt, the VE values are in the high teens around idle @13.5 AFR. As others stated, I'd check your injector settings. Also the required fuel setting. At idle I always shoot for a little rich. Say 13.5-13.7 BUT if yours is happy at stoic, then ...

I’m not to worried about it but I am curious to why it’s happening. It doesn’t seem to be in line with the “internet”.

And your right, I am using closed loop idle with a target lambda of 1. And actually it runs rich at maybe ~10 AFR. I have to lower the VE value for it to go to 14.7 AFR, which it ...

I’m using a fuel pressure sensor. In theory the standalone reads actual fuel pressure and compensates accordingly. I’m also using the built in injector configurations for my Siemens injectors, which means the standalone deals with deadtimes.

But after your suggestion I’ll switch everything back to ...

Is a VE value of ~30 at idle to low?

Car seems to be running well, but I can’t seem to improve on my VE at idle. If I put it up to 40 the long term fuel trim starts taking out fuel to about 30. At that point it starts to get to 14.7 AFR.

I’ve read someone else using VEMS had a very similar issue ...

Hello
Is it nessecery to take down the rear chassi to change the torsion bars? And if, what bushings etc. make sense to change then?
Thanks.


I believe Elephant Racing has instructions where you don’t have to. I think you lower one side at a time. But please check me on that.

I did job last ...

Where is it coming from, front or back?

If it’s in the front, it might be the downpipe of the exhaust section hitting the crossover pipe. That is a very tight gap with the 3” exhaust. In my case, it seems the flex pipe helped with that too. I was hearing a lot on fast right sweepers.

Drove the ...

Actually correction, the flex pipe was placed before the CAT as you can see in the picture. Not the prettiest welds but they do the job fine.

I’m not using the wastegate bracelet/brace either.

I’ll add pictures tonight. But yes I mean all of the above. Harmonic drone, general vibration at all RPM range, and buzzing at specific RPMs. Basically, for some reason, the bigger exhaust pipes are perfect to become a tuning fork that amplifies the inherent vibrations of an our 4 bangers. So there ...