Ok I was looking at my cylinder balance at idle, now by lowering the ratio that lowers the amount of fuel going in right? so 1 would be more fuel then 0.9 correct?

Reason I'm asking is I think my back cylinders are running too rich, I have a lazer temperature gun & the back ones show 160*C while the front ones are 260-300*C, also I took out my plugs on the back & they seem wet, so I want to lean out the back ones & check with temp gun again.

 

Yep...1 would be more fuel than .9

 

ok cool, I set mine to like 0.87 on the back two, I'll check the back two with a heat gun see if they are hotter, I noticed my plugs were pretty wet as apposed to the front ones, so I think its a good clue to be safe to remove fuel from the back two .

 

Assuming it's not an ignition breakdown, I'd say this is a perfect use for these tables, yep.

Think of the number as a percentage multiplier. 1.00 = 100%. .90 = 90%, 1.10 = 110%, etc.

 

no its got new plugs, new wires, & its the LTCC so I have coils per cylinder & they are working, I tried switching coils, it was the same temp with optispark when it was connected. my wires are short & new


PS. Thanx, that is a pretty good way to test ehh

 

Yep, a great way. Someone posted in this forum about doing that not too long ago.

Where'd you get your laser gun? How much? What kind? I've been thinking of getting one if they aren't too expensive...

 

I got mine for free from a friend, that one is like $300 or something, I just like to play with it all the time So I figured, hey why not test the primaries, it acctually works on them the head is like 80* C which is what my coolant temp is, headers differ in primaries, from 150-260*, my back ones are 150 so leaning is my option right now, I'll recheck the temps once I get home

 

Ive been using this table to do just what you are doing.....I used logged data from Datamaster to figure my numbers......I was working on split BLMs as well as a generally rich condition. I also made some tweeks to Off Idle balance as well. All BLM cells are within 5% of 128 now . I might add that I did add fuel to the front cylinders.....in otherwords I split the difference to stay as close to 1 as possible.

On another tangent....I made some adj to the BLM cell Boundries to make more efficent use of the BLM cell.

 

Hmm... nice with the BLM cell boundries, what are you using to tune? LT1 edit or tuner cat or which?

Also, reason I want the temp on the primaries to stay around 250 or so is because the spark plugs out of the cylinders with temps of 250*C seem very nice, but the cold primarie's cylinders have somewhat wet plugs, as for split BLM's I just turned back the idle screw to redirect the air throught the idle air passages instead of the TB blades & that fixed that, you should look at that TB mod on the internet, it works I went from 120/160 to 128/128 at idle, but the back cylinders is a different issue

 

Do not like throwing grit in the gears, but why are the plugs wet in the first place. They are obviously not wet with oem setup. Anything that is being overlooked? Just a little leery.

 

I doubt it, I mean I'm checked everything 10000 times the coils are awesome, I even tried swapping them with a friend's, everything seems fine, I think the cam is just so big I'm getting reversion happening in the intake & the back cylinders aren't getting enough air. so I have to compensate by taking out fuel from there.

 

I wouldn't blame the cam. I've got 2 friends with the 236/242. One in a 396 short, and the other with a stock bottom end.
In neither car have I changed any of the cylinder balance stuff. The only time there was a problem with plugs being wet was due to a plug wire that was bad, that you couldn't see from the outside and from a cracked plug.
Just seems weird you're having a problem...but anything's possible.

 

also depends on the heads I guess, either way ignition is 100%.