any suggestion?? need help with cam

[pullincrazy88]

i cannot get my truck to idle or run right what so ever. ive tried playing with the VE tables to get it to run good enough to do an auto VE but cant seem to get it right. can anyone look at my tune and help me out in which direction to go to get it to run right. heres my tune file jake new built motor last tune mod.tun.

here is my cam specs INTAKE EXHAUST gross valve lift .510 .510
duration @ .006 tappet lift 270 276

valve timing open closed
@ .006 INT: 2- BTDC 40 ABDC
EXH: 47 BBDC 3- ATDC

installed @ 111.0 intake center line
INTAKE EXHAUST
duration @ .050 218 224
lobe lift .3010 .3010
lobe separation 113.0

RPM band 1500-5500 and is a roller cam

the heads also have a 5 angle valve job with bowl work done and a set of 1.7 rollers rockers. mild intake side port work.

any pointers would be greatly appriciated as i am completely stumped with the tiny bit of knowledge i have so far.

[pullincrazy88]

o and i forgot my injectors are 36lbs at 4 bar.

[swingtan]

When you say "cannot get my truck to idle or run right", can you describe what is occurring at idle and what it's like when driving?

[hquick]

For starters, your IFR {B1058} is wrong.
36lb/Hr injectors at 58Psi should be 4.53600

And why is the PE set at :
18.526525
18.526525
18.526525
18.526525
18.526525
18.526525
18.379489
17.457584
17.457584
17.457584
17.457584
17.457584
17.457584
17.457584
17.457584
17.457584
17.457584

What size motor???

[pullincrazy88]

its the 7.4 liter. and i never changed PE settings just how long the delay was. as for running i cant even get the thing to run. it wont idle unless i have my foot on the gass and acts like it is missing when you rev it up. but it i take my intake silencer box off it will sit there and purr and rev up like it should. so does that mean my VE tables are set to low for the cam, or to high?

And for my injectors. my stock ones were only set at 2.8 and those bosch are still a little more then the motor needs so i toned them down. the exhaust will burn ur eyes at 2.5

[pullincrazy88]

where are you seeing that my PE is set that high? im not seeing it that high anywhere in the tune. what table

[swingtan]

PE is set in B3618 and is currently set as hquick has indicated. This is way, way to lean ( unless you are running pure hydrogen as a fuel ) and would make the car hesitate, backfire and buck or just plain stall when you put the foot down.

Do you have a wide band O2 sensor? if not, then get one and check your mixtures. The PE settings are quite alarming, as is the strange "kick" in the main spark table (B5913) at 95 kPA. Where did this tune come from?


Simon

[hquick]

By telling the PCM you have smaller than actual injectors...you will be running VERY rich.
Your injectors are a 'known' value so you should keep them at that value.
At those PE settings....if you managed to get the vehicle up to decent speed and RPM and then stomped on it..I'd be worried you'd hear the tinkle..tinkle of engine parts bouncing down the road!
Do you have a copy of the 'stock' tune.
Some more ehicle details wouldn't hurt either?

[pullincrazy88]

i believe the timing table is the orgional one from the hyper tech i used to have. as for the rest of the tune it was the one i was running with my stock motor. except for the injectors were still set at 2.5. ran the tune for months.

i have a wideband o2 sensor sitting next the the truck. havent installed it yet because i cant figure out how i am supposed to be able to log it. does it hook idrectly up to the labtop or to the pcm? the instructions that came with it say nothing except how to hook it up to a scaner brand ive never even heard of.

its an AEM wideband and has to be logged in analog with EFIlive how ever its done.

ill get the stock tune off the labtop and post it

[pullincrazy88]

heres my stock tune jake stock 2000 7.4.tun