LSX 403 Issues Rich to Lean

[TorqueMonster007]

Got a 403 LSX Stroker, 10:1 Compression, BTR LS1/LS2 Stage 4 cam. All associated mods. Big Walbro pump. 42LB marine injectors. 90mm Holley Hi-Ram, 87mm TB off of a 2011 truck with X Link to run TB, Stock MAF. Long Tubes. 60e with 3200 RPM Stall. Was originally tuned by a big name tuning company. I tried adjusting it as somethings like cylinder volume, injector data was off along with timing, idle air and MAF. It is better but still not acting right. Can someone take a look at this and just let me know if something sticks out for some reason. This thing will go from running perfect and a % change of 0.8% to adding 13% or taking 19% away under same load, points on VE and MAF scaling. Im beating my head against the wall at this point. Please let me know. I do not have saved logs on this computer but can get them tomorrow. The way it is running something must be off significant for it to be all over the place like this. Was before and still is just not as bad. "Original" was the starting point.

[nonnieselman]

A datalog would be very helpful

[TorqueMonster007]

A datalog would be very helpful

Actually got it figured out. Supplied injector data was incorrect for the 42lb 8.1/Marine Injectors. Just a heads up if somebody ends up with a set let me know as I have the correct data for an LS1B and E38 ECM/PCMs. The supplied input data was for 42.5psi and we are running 56-58psi regulated.

[nonnieselman]

Id like to see what ya got with the new data.

[joecar]

+1.