Just looking through the SEPST map I have installed.  176UZ007.dt0

Why are the VE and Spark tables so different on front and back cylinders?

Wouldn't in feel/run smoother with the same maps front and back?

Did a couple of smart tune runs today. Rear cylinder VE's are about 15%-20%  higher than the front. Is that normal?

Some have gone into the red over 127. Tells me to up the engine capacity in the tune set up.

If I do that with my smart tuning have to be re done again? start from scratch?

Its changing plenty of cells but why so much difference between front and back.

Looked  at my old data for my 96 with 204's and the VE were very similar with slight changes.

These are 20% more at the rear, Does that mean that the rear cylinder in 20% more efficient?

Starting to confuse me.

It feel s really strong though.

I'll play some more next weekend.

Yeah must have had a leak.

I  pulled the TB and  manifold out the other day.

Trial fitted the manifold and TB with filter plate attached, lined it all up. swapped injectors from front to back.

Idles alot smoother now ,must have had a small leak before.

Gee It goes well give it half throttle at about 3000rpm and it thrusts forward hard.

Map I'm using has wrong heads and cam but runs real good just a little cold warm up adjustment needed.

I'm gonna try a map with the right cam and head combo this week.

If performance improves again I will be stoked.

58mm TB works a treat. Don't know what all the drama is that it's hard to tune and is too big etc.

A few tweeks with warm up and acc enrichment and it's as well behaved as the stock 46mm.

Bring on the weekend for some more tuning.