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I will start to log that but lazy or not wouldn't it reduce the pulse when it does read 50 percent rich too?

I'm not sure what you mean by conversion package? Ive attached my current tune.

Build details:
350sbc bored 30 over, Summit Flat top pistons W/ 6cc relief, Summit Vortec heads, Melling cam Duration 283/287,
Edelbrock Pro-flo XT Intake w/ 92mm throttle body and 42lb...

It ran pretty good tonight, it bogs down between shifts but I thought maybe it was my tune.
I was doing maf tuning tonight and all was well until I got on it hard one time, down shifted and now the...

After I put the plugs back in tonight and put it back together it fired up again.

I updated my tune again and it ran better tonight then it has been so hopefully I'm on the right track now.

Has spark. Shocking, trust me.. lol
Really tho, it has spark at the coil and at the wire ends I checked.
I have a pressure gauge on the fuel rail and it shows good fuel pressure.
Timing was...

Already tired. I pulled the fuse for the pump and still no start. I don't have any starter fluid but breaklean should work and still no fired. I'm going to pull the injectors and test them I suppose.

That all I changed was the flow rate.
The tune attached here is what I loaded into my ecu.
I have my lightly modified tune back in that it was running pretty good on before but it still wont...

I checked out your tune and it didn't look like anything that would hurt to try, just to see if it started up and what the perimeters were reading and then decide if I wanted to test drive it.
The...

That tune has quite a few changes in it. I'm just learning to tune so I appreciate the help.

Yea, the truck never ran that hot before the rebuild.
I used the same water pump because it only had...

It was the new maf I put on. Good ole Amazon Special.. lol. I picked one up from autozone tonight and it runs much better. I put a near stock express Van tune back on it.

I have the engine running but it has no power and runs like garbage. Im sure Ive tuned something wrong but maybe you guys can take a look and let me know what you think.

Idk, just what I picked.

Sweet, Thank you for clarifying. No boost but possibly a small nitrous shot in the future.

I built up my 350 vortec got it running with the spider injectors but decided to upgrade to a Edelbrock Pro-Flo Xt intake w/ 42 lb injectors and I will be using a 5.3 MAF sensor with IAT sensor in it...

Things are getting crazy over here. I got the engine to run pretty good but I ordered the rest of the parts to put my Pro-Flo XT intake on it and stopped tuning until I get the parts.

Ive heard...

My goal was 300 maybe 350, not sure where you picked up 400.

I was just going off info I found. There was an explanation of how they could be more efficient but for a quick understanding 0.5 bsfc was used so I just based my calculation off that. Thank you for...

300 was my goal here, not sure where you picked up 400.

I'm not upset at all just trying to clarify what my goal was this time around.

I was just trying to get it tuned to run good, I'm not looking for huge HP gains. This will be my road trip/pulling...

Guys, I'm not building a race truck I was just trying to build something reliable that would pull my jeep, yes its a fat cam. Maybe not the best choice but here we are. I just want to get the engine...

LTFT should be disabled. I never cleared the memory on the ecu when I replaced the 02's so that's why the LTFT are still so lean. Please take a look at my MAF tune file and let me know if there would...

If I remember correctly the engine is demanding more airflow than I have added, see log file.

I do have a wide band but my dumb ass didn't pay attention to compatibility so I have the AEM 30-4110...

I'm pretty new to tuning and I am doing my best over here not to blow up my engine, lol. Not funny tho!

I put a 5.7 vortec in my 99 GMC Jimmy and did the 0411 swap as well. I got that all...