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Old 07-06-2022, 09:41 PM   #1
no694terry
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Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:
2018 Exotruck
EJ22e 415whp/398wtq

Default 32bit Speed Density Flex users

Been playing around with an Andea79 patched Merpmod ROM. I've used Carberry on my personal truck for years. There's certainly some differences on how it's setup but once you see how it works and you have some tuning background it's ok. The biggest difference is probably the single flex curve and how it uses a table to manipulate injector scale. Carberry probably does the same but it's more behind the scenes. But the one flex curve tables a bit annoying. For example, fueling obviously has to be linear, but if you wanted to run 20 psi on pump gas and then 30psi on e50+ you can't. You get one liners curve, so no 30 psi until your at e70 or whatever you set max at. There's other subtle still like the VE tables are in relative boost columns and other things. I skipped maf all together, the version I'm using is skimmed a bit since it's a 04 STI 512k image. No space so limited options.

But anyway, it's running, and so far quite well. The motors brand new so I haven't tuned boost yet but driveability is good. It was a brand new build, no stock cluster, not even a Subaru car. But it's a Closed deck ej25, 2008 heads, bc cams, boostline rotating bits. GT3076R turbo.



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Old 07-20-2022, 03:36 PM   #2
HughGordon
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Join Date: May 2013
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Very cool! I'm currently running a DimeMod ROM on an 07 sti ECU. Haven't tuned for flex fuel yet though.
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Old 07-20-2022, 07:03 PM   #3
benflynn
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Join Date: Jun 2020
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No need to dimemod, free merpmod avail for all the sti I believe, 06 and 07 for sure
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Old 08-08-2022, 04:50 AM   #4
tjr1
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Join Date: Aug 2022
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Hi no694terry,

Was there much you had to do to get a merpmod ROM on a 512k ECU?

Any tips and tricks, I was looking at doing it for my Liberty GT but told I couldn't due to the 32 Bit ECU with only 512k of storage.
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