in over my head?

[travissowell]

Ok guys I am currently working on another ratrod. This one is a 37 chevy truck with a 2002 LQ4 twin 62 turbos and the sloppy (jegs) cam and Deka 80 injectors and an ebay 2 bar map. I have been fooling with this thing for about a week and cant get it to idle and will barely run.. My tuning knowledge is slim to none. so far I have tried copying sloppys turbo 6.0 with same cam and injectors, figured that would at leaset get me close?? anyhow you guys helped me with my last build and we/ you got it running great but it was no where near as modded. any help would be greatly appreciated. this is the latest butchered file I have but at least she will sort of start on this file.. the one thing that sticks out to me is the map reading seems messed up and I have tried to adjust the offset to get it to read close to 100 {Houston} but it just seems to have a mind of its own. Thanks in advance

6.0TT2bar7.13.17map8air4spark4.hptfirstruntt6.0.hpl

[5FDP]

Get a real MAP sensor, look at that thing peg out to over 200kpa at less than 2,000 rpm. No way you are making over 15psi of boost at 1,500rpm.

Also the MAF dtc's must be set to fail on first error for speed density.

[travissowell]

is there a map sensor I can buy at the auto parts that will work without splicing wires?
on the maf I had it set to no error reported, so I need to set that to mil on first error instead?

[5FDP]

Yes, the settings should be fail on first error. You are telling it to default straight to speed density once it's start with them set that way.

I believe you can buy one of the older brick style 2 bar maps that share the same plug in on those older style harness plugs. Cars like the L67 3800 from 97-03 have those, grand prix's and buick regals with that supercharger motor.

[cobaltssoverbooster]

factory map sensor for 2002 should be a 1 bar AC Delco 12614973.
if you want it in 2 bar then you could use an AC Delco 12615136. should be a linear of 200 and offset of 8.33 per 5_Liter_Eater back in 2012

[travissowell]

well I am getting somewhere.. I just installed a stock map sensor and put stock map data on her and changed the maf to mil on first error. It ran! but still wouldn't idle I had to hold it at about 1/4 throttle to get it to start and run,, but she ran

[cobaltssoverbooster]

since you dont have another log posted im assuming your map is reading correct values now. if you had to push the throttle in then its likely you dont have enough air coming in at idle. try raising your Running Airflow up to 11.7-12.3 g/s and see if it runs up there. its ok to overshoot this value some as it will cause a rpm drop hang until tuned out.
i raised the idle on my stock lq9 to 750rpm because i liked how much smoother it was over the stock 650rpm. when i did this my stock cam requires about 11.6 g/s.

[travissowell]

I bought a new 2 bar delco sensor and got it tuned in to 102 kpa with the key on. I had to add some air and she busted right off and idled.. the thing i noticed right off the bat is she seems real lazy when you rev her up. I will post a tune and log a tad later. Thanks for the help so far!!