2003 ECSB silverado 1500. Has a mild built 6.0 and 4l80e swap that I did with a 3200 stall converter, long tube headers, tsp224r cam, full exhaust and an intake. Engine is 11.1:1 compression. Stock intake manifold and stock iniectors.

Tuning is done by EFI live, basically a tune I have been tweaking myself (not a professional by any means). The injectors are running 95% duty cycle. My track times show 300whp, but people tell me that this setup (with bigger injectors) should make around 380-400whp.

I have a set of deka 47lb/hr injectors here ready to go. But have been hesitant to spend $500+ to have a shop tune this thing. I'm curious if you guys think there are potential 80+hp gains available from these new injectors and a good tune? If so, I'd be all over getting it done. The truck does run great, but I feel like it should definitely have some more in it. Gears right now are not what I'm focused on, but will be later.

 

yes, that HP is low, I had a 5.3 with a mild/small cam, LT headers
CAI, it made 324 rwhp with a half *** dyno tune.

 

I'm sure this tune is extremely half assed. A good tune by itself would probably wake it right up.

 

Unless you are running super lean, injectors by themselves wont do anything. Do you have a wideband on your setup? Are you basing your track times on ET or MPH?

Im assuming you are using efilive? If you had hptuners I was going to suggest I do email tuning and could tune it for you over email, but I am only set up to do HPTuners.

 

Yes, I have a wideband. I see 12.0-12.4 WOT. I'm not good enough to really dial the AFR in so I left it as is since I know it is safe. And yes, I am using EFI Live.

I was basing hp off of the MPH. I trapped 91mph.

 

That motor should be way more

I trap 99mph in my 5.3 tr220 ecsb

 

I am also at 4300' elevation with an average DA of 7000'. I'msure that isn't helping. Either way, it needs a good tune.

 

Could you post up your tune?

 

I could, but I'd probably get laughed out of here lol

Give me a few and I'll post it.

 

Here is the tune. The tune originally started out as a tune for the 5.3 that was made by a buddy several years ago. I then made a few tweaks to it when the 6.0 went in. Like I said, it is probably hacked since I am not a tuner by any means and neither is my buddy

AFR's are good and the truck does run decent, other than cold idle is a little choppy with this cam because I don't know how to tune for it. Anyways, be gentle.