always faster

iTrader: (6)

Ok i ve made a lot of dyno tuning last year.It came down to 318whp and 337wtq sae @12.4 afr.Yes i know i need to lean it to aournd 12.8-12.9 to free up some hp.

The only mod i ve made since is a lsx lid conversion with a slp upper lid and FTRA.And a fuel line relocation kit.

Now today after washing the beauty i took 5 mins to log it in idle since it was smeeling gas a lot(datamaster).To my surprise the car is still idling with equal blm but instead of being at 126-126 like they where all year long last summer they are at 122 then 120 and going lower to 118(rich rich rich).

The only problem i had this summer.Is that i capped the evap canister hard line under the car after the fuel line relocation without disable it. And run it for a couple of miles until it would smell gas a lot and that a lot of pressure was building in my fuel tank.I then reconnect it to the evap solenoid under the hood.

Now my blm are really richer than last year..

What could cause this

C_Rules

iTrader: (7)

i hope we get some replies on this one. this is a good topic especially for those into tuning.

always faster

iTrader: (6)

Well i made some test with and without the evap connected(trying something at least )

I made two logs and run the car on idle for 1500secs of datamaster.There is no difference between evap connected or not in LT BLM term.Im seeing now 118-119 steady(no more 116 or less) and it goes up to 122-122 while the fan is working.The tune that i had was steady 126-126.

So only thing changed since last year:fuel line relocation and ls1 lid setup with ftra.

wrd1972

iTrader: (12)

Since you are not really split. Sounds like you need a simple MAF table adjustment. From what I have found, a leaky injector will bring the BLM down.

always faster

iTrader: (6)

Injectors are fine,no leak what so ever on nothing on this car

So what your saying is i need to have my tune tweak just a little.
If its just that i will be more than happy with this solution.

C_Rules

iTrader: (7)

you say when your fans come on the blms jump up to 122 so it sounds like the change could stem from something temperature related. i would look at your iat and engine temps on the logs before you did the lid and compare them to what you see now after the mods. it could be the new lid changed your readings up a little bit which then changed your blms.

the fix would be to change either modify your ve or maf tables as stated above.

gregrob

iTrader: (8)

Yes you need to have your tune tweaked a little.

always faster

iTrader: (6)

Well since i got you,at what speed should my fan come on.I got a 160 degree thermostat and of course a tune.I ask this question because it could be related with heat.

So:

-The first speed should start at:???
-The second speed should start at:???

And by the way where can i see this in tunercat,i think that this is supposed to be in the *constant* table and it should be *Fan thresholds low mph*...But all i got in the table are the high speed wich is zero...I wanna see where those number are set...

Thanks

infinitebird

iTrader: (11)

It depends what version you have. For a while the fan settings were in the constants section, then a few versions back they moved them to their own table.

gregrob

iTrader: (8)

Send me a copy if your tune if you want and ill set it. Can't remember off top of my head.

always faster

iTrader: (6)

Well i ve already sent you my tune a couple of weeks ago to play with the AFR.Im at 12.4 and you told me that i could get crisper throttle and some hp running it at 128-12.9 but never got news from you

Didnt want to bother you with this so i forget it.

For the question:
Mine is at 180low-185high.The fan temp control now got its own table *fan enabled coolant temp vs speed*

Im happy because i learn another thing today.

gregrob

iTrader: (8)

I never got anything from you... what address did you send it to

always faster

iTrader: (6)

But you did make me two update...one for my egr delete and one for my ccp delete.You just told me that you needed time to work on the afr.

But hey i doesnt matter.You are always there to help everyone and me

1961ba427

iTrader: (26)

Just reading and learning.....but have to ask....what is a ccp delete?

gregrob

iTrader: (8)

I remember now. I actually said you should learn how to adjust WOT fueling so when you get it on the dyno you can make the changes right there.

I can give it my best shot but without a dyno to verify it's going to be tough to get dead on at 12.9

If you want to send the version of the tune you're using now I can make the MAF table adjustments to get you closer to 128 and pull a little fuel out of WOT and see how that works for you.

1961ba427

iTrader: (26)

Okay....I noticed this morning I had a typo and changed it from cpp to ccp....finally found the "common acronyms" list again in the newbie section,
But I still did not see what a ccp or ccp delete is.

C_Rules

iTrader: (7)

i have mine set at low 82 and high 86 (deg C). keeps the car runing cool around the 180s F.

C_Rules

iTrader: (7)

i believe that would be the charcoal canister purge which is related to the EVAP system.

1961ba427

iTrader: (26)

THANK YOU!!
Good luck with your problem OP. Wish I knew how to help.