ctd

iTrader: (1)

LS3 stroker, AFR 230, ported Fast 102 & NW 102 TB, cam is 243/247 .628, AR 1 7/8 3" exhaust, C5

The injectors are modified LS3 to 48lbs, the correct data was given by the supplier & loaded into the tune.

In the lower rpm columns of the VE I've reduced the original values by on average 50% & the Cranking VE table by 70%.

This does not seem right based on the modifications to the engine & increased displacement.

I'm hoping for some experienced tuners to offer there thoughts on this, primarily if it is correct or not.

turbolx

Are you sure your data is right? You might want to read this article.

ctd

iTrader: (1)

I've actually read the article which is one of the reasons I'm asking the question.

To answer your question, no I do know if the supplied data is correct. I'm not near wise enough to know that either. Another reason I'm asking the question.

The simplest solution would be install stock LS3 injectors, load the correct data & see if VE results move back. I do not have a set of LS3 injector's to try.

edcmat-l1

iTrader: (10)

That cam would require a significant decrease in the lower VE. How about post your tune and some of us here could tell you if it looks right?

ctd

iTrader: (1)

Sure I will do that.

edcmat-l1

iTrader: (10)

IFR is incorrect........

ctd

iTrader: (1)

OK, that I beleive is the data from the injector supplier, I'm not sure what to do.

The way you see the error would that cause the rich condition?

edcmat-l1

iTrader: (10)

Yes. Lower flow rate, more fuel. Get with the injector company. Find out if they're rated at 3 or 4 bar.

ctd

iTrader: (1)

Tx's Ed, I will get on it.

RedHardSupra

iTrader: (1)

here's a pile of stuff on injectors and why they're important to get as perfect as possible:
http://redhardsupra.blogspot.com/200...ctors-are.html
http://redhardsupra.blogspot.com/201...-grouping.html
http://redhardsupra.blogspot.com/201...-and-4bar.html

ctd

iTrader: (1)

Ed, I did as you suggested.

Would please have a quick look & let me know if you feel the lower idling rpm area of the VE table is where you would expect it to be. The change was nearly 31%

edcmat-l1

iTrader: (10)

Looks a little better on the IFR. Did you change the offset at all? I didn't compare to a stock file, just your other one, and it's the same.

The VE still looks a little low, but it may be right for that cam. Get the rest of the table dialed in then you'll know for sure.

ctd

iTrader: (1)

The Offset, Short Pulse Adder & Min Injector Pulse tables were all changed as given by the supplier.

Other than the IFR which you identified being incorrect the other tables were changed previously, as you stated there would be no change in them from the previous tune.