Using Holden202's $12P Methanol Tune In A V6

[v6bucket]

Been having a play with this this arvo. I've been adjusting the injector constant to get it to run, but I've had to move it a long way from were we thought it should have been. I got it to run ok with the injector constant set at .100 with it still a little lean, but only a small adjust will get it ok. We've got some dyno time tomorrow so we might get some good info.
This is the bin that I'm using.

$12P-v110 Methanol 2 bar 1.3.bin

(32 KiB) Downloaded 337 times

This is the LM1 log file.

Injector cons .100 130 .log

(60.32 KiB) Downloaded 368 times

I was getting readings with the TP5 but I haven't worked out how to save what is on the screen, & when I started recording today, the TP5 "dash" was stationary.

[Holden202T]

aslong as the injector constant gets the highest point in the VE table around 90 then its right .....

[v6bucket]

Is there another way of increasing the amount of fuel across the board?
When I switched it to .130 the engine would stall, so I'm not sure if it dumped a very large amount of fuel or some other issue.

[vn5000]

Your going the wrong way , the larger the constant the smaller the injector.Try 0.095

Soorry for the bum steer mate you were going the right way .Had a few too many last night.

[v6bucket]

We started with an injector rate of .065 (as was worked out with Holden202)which was too lean, & worked away till it would run which is .100. It had a bad lean hunt at .075 & showed up about 30% lean by the LM1.

[Holden202T]

well try changing the number in smaller increments .... ie. if it runs at .1 but is too rich at .13 try .11 or .115 etc ....

[Jayme]

yeah .13 is 30 % richer than .1 it was probably flooding at .13

[v6bucket]

We gave it a run on the dyno(in shootout mode) unfortunately I haven't had time to workout how to log with TP5 yet, but I did log the AFR with the LM-1. We tried the ATFY bin so we could compare it with the last years run on another dyno. The dato made 185hp with the ATFY (1bar)tune, then I changed it to the following bin, which is a 2bar tune.

$12P-v110 Methanol 2 bar 1.7.bin

(32 KiB) Downloaded 337 times

2nd dyno.log

(89.65 KiB) Downloaded 266 times

After changing a few different injector rates we found that the .095 worked the best, although it looks slightly lean at idle, it doesn't hunt so it seems to be happy. It finally made 215hp at the tyres which we were happy with. It has a dip in hp which may be the extra injector. What we are going to do is hook the injector up to operate at a given pressure instead it's on from when the throttle hits a given point. I'll get a copy of the dyno print out in the next few days & upload it.

[Jayme]

you can use a $12P flex table for that. hook one of the flex outputs straight up to the earth trigger on a relay that triggers the injector (assuming you are just holding the injector open using a relay when its triggered) then set up a flex table for RPM vs MAP and put 100 in all the cells to the right of the pressure you want to activate it at.

I would set it up somehtign like this, except set it at the pressure you want. the table just uses the value in the last cell if it goes off the edge of the table.

flex2.JPG (72.91 KiB) Viewed 4318 times

flex1.JPG (50.09 KiB) Viewed 4320 times

[Holden202T]

without an rpm or map sensor trace in the LM1 logs they are pretty much useless....

i am only guessing, the second half of the log looks like deceleration from the LM1 readings!!

the other thing i am assuming is the really rich part is the WOT run .... going off that assumption its probably slightly rich ..... 10.5:1 in petrol speak or 4.60:1 in methanol terms ....

for off boost areas you want to target about 12.6:1 for petrol or about 5.5:1 for methanol ..... but then as boost comes on you obviously want to richen that up ..... as far as what AFR you want on boost im not really sure, delcowizzid and jayme can probably advise better there.

my suggestion would be to work on getting the WOT areas closer by adjusting the injector rate to lean it out a bit, then once thats right adjust the VE table to get it idling right etc ......

i sorta agree with jayme that the flex table is probably a nicer way or running the extra injector but honestly its all a bit dodgy as far as fuel control goes, you really want to get bigger injectors and have the injectors in the manifold and turf the extra one ... but thats a bit beside the point of getting it running properly.

i honestly think with the low boost you'd be running that its too rich and thats probably causing alot of the lack of HP.

you need to get tp5 logging working and input the lm1 analog output into the 808 so then we can see all the info we need to be able to help you with tuning it.