I'm gonna chime in in an area where my knowledge is NOT expert but I do have some experience.

Looking at the pics of the phenolic spacers vs the LSX innovations aluminum spacers that I had the port match looks no good to me. The aluminum spacers that I used the port transition was as good as possible to be had.

Now, we did notice some tuning challenges when it comes to driveability with the LSA on adapter plates but ultimately we got it running pretty well. That was even with Snake Eater 850s.

Seeing what I am seeing now in the pictures above I would get rid of the phenolic spacers and try the best aluminum units out there taking great care to place the spacers perfectly by viewing down the blower ports from the top when installing which is what we did. and yes if you skip that step and just slap them blower on the port match can be terrible! I actually thought the port match on mine was very good.

Also learning from experience if using the aluminum spacers I would use ULTRA BLACK on the spacer to the head surface and NOT shitty cheapo FelPro blue orings. Pretty sure I was fighting vacuum leaks for over a year because the felpros had literally disintegrated.

I am currently running Fuel Injector CONNECTION 750cc injectors in my current LSA combination without issue.

I would rather have Fuel Injector Clinic injectors for the warm and fuzzies but they have a big size difference with no middle ground from like 62lb per hour to 90 or so.

 

He is looking at getting the stock injectors. It makes 12 psi. Not sure if that’s stock?
anyway I’m not sure if the stock ones will be big enough?

I don’t think you can compare stock ecu with the Holley as far as tuning is concerned.

 

I was going to say…..if I was assembling this combo, I’d for sure have a look at the port match, along with the injector angle mocked up before fully bolting the heads down.

Then get out the die grinder….

 

IIRC Ron, the LSA is around 8 psi stock on a CTS-V. The reason the C5 setups see much more is because the modified Corvette spacing snout uses a 2.45" blower pulley which is tiny compared to stock.

 

I fully agree with you on the tuning part Ron, and I know you are a much more competent tuner than I am, especially on a stock ECM.

But yeah I'd look at the adapter plates as both myself and Mr.Black mentioned, and as far as injectors go, I'd pretty much only be looking at the idle and tip in characteristics with something else with good known data points.

 

Between Mr Blacks car and Jumbo’s car, I’m not feeling very competent on LSA blower cars at all.

 

My car wouldn't be where it's at today without your expert tutelage Ron!

 

I'm now back in town. Very happy to see that this gained some traction. I tried to use the multi quote as there are some REAL good ideas here - I can't figure it out. Thank you ALL for helping with the heavy lifting here. Ron is pulling his hair out so he reached out...

DDNSniper - That is a great idea and I should have thought of it myself. Unfortunately, I'm running out of C5 Drive time in PA and that will take a bit of work but - I like it though. I have a feeling the blower will be off as part of the Winter Work (THAT list is getting longer by the day)

****** - there site is up and running. I was just on it yesterday. The father / son team there has been VERY helpful and eager to fix this. They even swapped the injectors that came with the Boost District 'kit' for '60LB Deka LSA' shown above. Originally it had '650CC / 60LB @ 43.5 PSI Matched LSA,3,7'. I can't remember why they felt they needed swapped but they did it for me Even-Steven. Nice of them!
They told me that OEM LSA injectors have a +/- 4* offset index that would aim the spray more toward the valve - away from the wall. But 'we' are not sure it's enough injector.

The 2.45" pulley was from BD and Olsen Kustom. I'm not sure if it's a fit-up thing or just BD wanting to Max out everybody's everything. He seems to be HP focused - MORE is better. I'd rather have a reliable, fun car that is Street-able and Trust-able.

Mr B - I too, am only here because of Ron - I want to learn more and am trying but he's the driver and I listen to him.
The port match was not something I even thought about. It IS off quite a bit. I only went with the phenolic to isolate heat - maybe not such a good idea? Also, OKW says to NOT use gaskets under the adapters - MUST use RTV. This time I used fuel resistant sealer. I think the aluminum style is just tougher and will probably end up swapping them this winter. (that damn list again!)

The Crappy part is that the tune was making nice progress. Ron takes baby steps - safe and effective! Then he changed the injector data files and the SHTF. There seems to be 2 schools on the adapters. Love em or hate em. There are a lot of people running them with no issues - then there are times like this. I'm not sure they are the problem. I DO think its mechanical. Before I left I did a quickie Test with Propane - looking for a vac leak - found nothing. I will do a more thorough one ASAP - I want to get UNDER the blower and need to put a tube on my torch head.

Thanks again to ALL for the input - Great Forum here - Smart and Generous with your time & talent.
VERY grateful!!

 

That made my curious. If I 'search' for FuelInjectorConnection.Com I get nothing. However, I tried to paste this in the search bar - https://fuelinjectorconnection.com/pages/contact-us - and it loaded right up and all pages are active. Tried it on 3 computers - all worked.
I do know that the Big G can get pissed at people for one reason or another and make sure they end up on page 16 of search results. Maybe that happened here?

'We' will be talking with them tomorrow to see what they think the issue might be. They are willing to swap the shorties out or whatever I need. That's pretty good service IMHO. They really do seem to care and that's important - to me.

Thanks again for any help.

 

Are you sure someone didn't tag that link incorrectly? Maybe you have fuelinjectorclinic parts? Those are well known. I'm guessing not since it sounds like you have been in contact with them, but several companies out there, easily can be confused, on purpose by creation idk.

 

It’s Fuel Injector Connection. I called them to discus yesterday, but the head honcho was not in.
I may call them today to at least clear up some confusion about pulse widths and ignition timing.

That said, we have gone back to a tune that ran nice, even did a write entire, and the car is out to lunch. 50% lean….so something else is amiss. Jumbo has some trouble shooting to do.

 

Thanks everyone. I'm gonna pull some plugs and have a look - maybe post a pic or 2.
Any suggestions on where to start the Trouble Shooting Process? I want to finish looking for air / vac leak with propane but I can't keep it running at idle at this point. I'm kinda stumped and need advice - got any??

 

Here are the plugs from the Pass Side - that is where my WBO2 is located. I don't see anything overly funky - Damn! They were tight though. The goo at the taper is copper anti seize.
They are TR6's gapped at .030.
TIA for any help...

# 2 - (1)

# 2 - (2)

# 4&6 (1) 4 is on top

#4&6 (2) 4 is on the right

#8

 

If it's showing 50% lean, and the plugs look like that, something is definitely a miss.
What fuel rail is on it? I've heard of guys pinching the fuel injector o-rings on these, creating a vacuum.

I would either build/run a smoke machine on it, or connect up a air compressor to it at 8# and get some soap water carefully on places.

I suppose you could use whatever gas you want to do that.

 

10-4 on that, RP !!
More than 1 has suggested a DIY or Pro Smoke test. I guess it's time to listen to people with more smarts than me.
Thanks for the reply!

 

So, maybe I missed this, but any chance the exhaust just has a leak somewhere? I'm sure Ron has had that discussion with you though. Not his first rodeo.

 

So he went back further in the tune revisions and now it runs fine. Puzzling as I have a data log of the previous tune I had him install, and it was all good then. But he plugs that tune in and it barely runs.
Somehow, I screwed up I guess.

So, we will go back to the last one that runs good now, add the slightly updated injector data and resume.

 

I ain't mad at you.
It has to be something simple. You make such small changes in each version - a GOOD thing - that it 'should' be easy to catch. There's not many versions between the random one I loaded and the current one that has issues.
YOU DA MAN!! Thanks for all the hard work. I sure am learning a lot.

 

Not the first time I've heard of odd ball things happening Ron. I have personally had that kinda thing happen with Holley.

 

Glad you are getting this sorted out, I have been looking at an LSA with adapters. One thing that caught my eye, that stuff on the plug threads, diff schools of thought, plugs need to ground,
some feel you can insulate the plugs and cause problems. Real or not, who knows.