Pyroviking

iTrader: (4)

I am preparing for an LB9 to L98 swap and am trying to make sure I've got as many bases covered as possible. I've purchased the L98 and now am trying to make sure I'll be setting up the ECM properly.

I was thinking that I wanted to start with a stock AUJP bin, but I'm not sure how difficult it would be to make it work with the manual tranny... I have a feeling there's more to it than just the M/AT switch.

I've read every resource on this board I could find on DIY programming, I've got all of the hardware to burn and install the chip. I'm just not sure if it would be smarter to change the displacement and injector size on my stock AXYB, or change a stock AUJP to manual.

I've compared the bins, and there seem to be major differences in the tables between the two.

Thanks in advance for any assistance.

-Andrew

RednGold86Z

iTrader: (1)

I would start with a manual bin, and change the injector size and displacement.

As an example of what I've seen that I thought was kind of crazy recently - the VE from a 1.5L to a 1.8L - of similar and possibly same head and cam, intake and exhaust - with just changing injector flow, and displacement constants - were within 1% of each other in most places. Spark timing wasn't drastically different either. I would have thought at least a few percent here and there, but 1% is less than standard deviation from day to day on any single engine.

DENN_SHAH

iTrader: (1)

you could start with S_AUJP_V4.
it has a place to set it for use with a manual trans along with number of other enhancements.
you can get it at http://www.moates.net/info_pages.php?pages_id=14 in Custom Modified Binaries, its down near the bottom.
there are 2 parts to it, so be sure to get both files & read the all Documents in them.

Pyroviking

iTrader: (4)

RednGold86Z:
The differences I've found comparing the tables from the AXYB bin (305TPI man) and the AUJP bin (350TPI auto) seem to be well above a 1% SD. It surprised me that two similar engines were so different. I might post an example if I can figure out how.

DENN_SHAH:
I have researched S_AUJP_V4 pretty thoroughly. My only concerns were that 1) I need to pass CA smog, and even though it is an *awesome* effort to improve performance and diagnostics, I have no idea how it will affect my ability to pass emissions tests which is why I'm trying to stay as close to stock as possible & 2) other than the same M/AT switch in the stock bins, I found no documentation on adapting it to a manual. There seems to be a lot of stuff relating to the AT that may have unforeseen effects.

I noticed on the site you referenced that there was a bin file for an L98 5SPD, but I have no idea about how drastically it was modified from the stock bin.

RednGold86Z

iTrader: (1)

I didn't mean TPI cars, I was just stating an interesting case about 2 engines that I work on.

The IAC function should be the biggest difference from auto to manual. Might be some spark differences to avoid surging at lower rpms.

Kevin91Z

iTrader: (1)

If you want to bring your car and equipment to me, I can teach you what you need to know to tune you car.

Pyroviking

iTrader: (4)

I will probably take you up on that. I won't be doing the engine swap until May, though. Doing research and accumulating parts in the meantime.

You had mentioned your dad's shop in a PM... is he a member here, too?

Dyno Don

iTrader: (7)

Yes, I am

DENN_SHAH

iTrader: (1)

with the better resolution V4 has i believe it would work just fine as far as emissions goes.

vernw helped with & tested the manual part of V4, i don't think he would mind if you give him a PM for pointers.

Pyroviking

iTrader: (4)

Aha, I suspected as much I'll be seeing you soon for installation of the SFC's you recommended.
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Ahhh, that's great info. TYVM!

Grim Reaper

If someone offers to sit down with you and help teach you eprom burning - GRAB IT! Having someone sit down with you for half an hour will save you tons of reading...or better, make the reading EASIER & QUICKER to understand (as I think you should do the reading regardless). And Kevin was one of the first people on TGO to modify their 305 Manual bin to work on a 350 and meet California emissions. So he can help you immensly there.

I personally prefer starting with a 305 manual bin and modifying it to become a 350 bin. There is a lot of "little differences" which all affect "driveability". I would recommend STARTING with a 305 manual bin first. And once you perfect it - safe it as your "base line", and then try the S_AUJP version 4. That way, if you are finding little "driveabilty glitches" with the S_AUJP you can go back to your "baseline" modified 305 manual bin.

S_AUJP "extras" are nice to have but unless you have a specific need like a large displacement engine or very high revs, it's not a necessity. But once you have your "baseline" and you want a "challenge", then you can try the S_AUJP version 4 while having a good running car that meets emissions.