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Looking for a shop to complete the tune on my L29 454 truck in the Charlotte area, anybody have recommendations.

Edit: Could also be in the Spartanburg, SC area. Each is about an hour from my...

Log from that test. about the 2.5 min mark I tried playing around with hold a steady idle with locking in the RPM and timing. It did ok over 800 RPM but I could get it to hold 750 very good. Overall...

It started in TN and couldn't find anybody willing, moved to Ohio and the same thing. I'm now in North Carolina and thought I was going to have plenty of time but unfortunately I'm in the same...

appreciate the response and crap I don't know where to start. I don't have the Injector part #handy but they are for the P59 engine, using billet hats to fit and all the P59 tables carried over. The...

Logs and tunes. I ran through the Russ K histograms to just get the idle in park adusted. I turned it off after the first three cells as it looked like it was about 40% so I adjusted it 40% to get a...

I don't have any yet for this go around. I just wanted to make sure I was going down the right path with just updating the engine/Idle/Idle Airflow/BaserunningAirflow - Idle Airflow and then possible...

I know there are lots of tutorials on idling and I've read plenty, some with conflicting info but wanted to start from scratch here as I feel my exact scenario is a little different. Vehicle is 96...

99 L29 7.4 with 0411 PCM. Idle loggign shows 850 RPM and the tach is like 1200, 1450 log is 2000 tach and then it gradually raises a bit from there. I searched and found some people doing other tachs...

Any fix for this? I finally got my 99 L29 7.4 with 411 PCM setup running good and noticed that at idle the tach is about 300 RPM or so off but on the highway it's way off like 1k maybe more as I...

Looking for some help with this truck. I have basically this weekend to get it running good enough to try to drive from OH to NC the end of next week. If somebody is a tuner or you know a good guy...

I started with a base L29 tune file, then moved the injector data over in the hopes that it would be close enough to at least start and idle.

Assuming those were the files you posted up, then yes. tables: 12311, 12315, 12316, 12310, 3055, 12314

Injectors came and I got them installed. It seems like the AFR's might be better I'm not positive as now it won't start or idle without giving it some throttle. Looks like I need to find some time to...

Injectors and adapters ordered will be here Tuesday.

Appreciate the help. This is why I tried to ask before but apparently not the right area or time. I'm dying to see if this thing runs as good...

Holy crap on RA those are like $20 an injector vs 50 for the LS3's. Which size are these the LS2 or LS3? They look pretty small like the LS3's. Also any difference or benefit of one vs the other?...

That's what I had to do with the last one I bought. Unfortunately the other two a specter and an autozone unit were so far off the only way I could get to 0 was with it cranked completely and was...

So Ideally I should order LS3 AC Delco injectors 12576341 - 42lb and some LS3 to LS1 top spacers and I should be able to "easily" get the factory parameters from an LS3 equipped Vette/Camaro stock...

I don't really care what injector it is but the truck should hopefully be in the 400-450HP at the engine range. Rough checks on calcs show 35lb+ injectors. The problem I currently see with using...

I found Smart Fire Injectors, they have a website but I came across their ad on Ebay. They supposedly test each injector and match the sets and the customer service was quick and friendly. I was just...

Well stated. Assuming the place I got injectors from can't supply those which will be unlikely. Point me to some new injectors that will come with all the data I need. I picked 42lb as that gave a...

help me understand what a tuner would do when they do not have all this information. There's endless company's out there selling injectors as upgrade replacements without all this information. One...

Help me understand. I've put aftermarket injectors in several vehicles with either minor table adjustment to just using piggy back fuel controllers with no issues. I'm told by so many people over the...

The stock injectors are tiny, if I recall like 19lb. From what I could find LS1 injectors are a good upgrade. Problem is some of these GM's ran 4bar and all the injector ratings are at 3. I can try...

7.4 Vortec engine
0411 PCM
Important Mods - I/H/E, towing cam XR264HR-13, 42lb@3bar injectors

I'm trying to get my truck running properly and finding that it seems to be running very rich. I...

I bought my 411 preconfigured with a "stock" 99 7.4 setup but it runs like crap. I have headers, exhaust, intake, newer 4 hole injectors and a towing cam (212/218 [email protected], 510/510 lift, on a...