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  1. #1
    monaroman76's Avatar
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    Riva ecu and mini rude

    I know quite a few have run a very similar setup to what's in my sig.
    I'm about to install a turbosmart rrfpr to go with my setup, I'm interested to see what others think my baseline fuel pressure should be. Will I be best off to run with the boost reference line attached?

    I've went for a ride with the stock reg - idle afr was low 11's, mid was 12.5 ish, WOT was low 12's. This was in a bit of chop and I didn't pull peak rpms, so possibly it'd lean out a little further.

    I was thinking, as these numbers aren't terrible, I'd probably be looking at turning the base pressure down to the low 50's and have it raise up to low 60's and be pretty well on the mark at WOT. I'd like my idle leaner and I'm confused as to why it idles richer now than what it did with the stock ecu and 48's.... I recall Eric saying his idled the same with the riva ecu and 48's.


  2. #2
    MSRXP's Avatar
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    Numbers are good. If you go with the riva, it is mapped for 50's. Get the Bosch and you might have to adjust the base pressure a touch but it will be dead on. Go with Jerry's reflash.

  3. #3
    monaroman76's Avatar
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    Too late to go with jerry's reflash mate. I'm stuck with the riva for the time being. Just got to get the fine tuning right.

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    MSRXP's Avatar
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    Quote Originally Posted by monaroman76 View Post
    Too late to go with jerry's reflash mate. I'm stuck with the riva for the time being. Just got to get the fine tuning right.
    Ahh ok. Didn't know. I can't see the mods in the sig. On the phone app thing. Sorry bro!

  5. #5
    Bob 1tommygunner1927's Avatar
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    Quote Originally Posted by monaroman76 View Post
    I know quite a few have run a very similar setup to what's in my sig.
    I'm about to install a turbosmart rrfpr to go with my setup, I'm interested to see what others think my baseline fuel pressure should be. Will I be best off to run with the boost reference line attached?

    I've went for a ride with the stock reg - idle afr was low 11's, mid was 12.5 ish, WOT was low 12's. This was in a bit of chop and I didn't pull peak rpms, so possibly it'd lean out a little further.

    I was thinking, as these numbers aren't terrible, I'd probably be looking at turning the base pressure down to the low 50's and have it raise up to low 60's and be pretty well on the mark at WOT. I'd like my idle leaner and I'm confused as to why it idles richer now than what it did with the stock ecu and 48's.... I recall Eric saying his idled the same with the riva ecu and 48's.
    What boost numbers are you seeing with the Mini-Rude/Riva ECU? And, you don't need the full reflash, just have Jerry increase the rpm limit.

  6. #6
    monaroman76's Avatar
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    Quote Originally Posted by 1tommygunner1927 View Post
    What boost numbers are you seeing with the Mini-Rude/Riva ECU? And, you don't need the full reflash, just have Jerry increase the rpm limit.
    Havent had a chance to check boost numbers yet, there was a bit of chop out, and I have no chance of reading my mech. boost gauge while going through chop. Hopefully next time out is better.

    I just saw that Jerry can increase the limiter on the ECU. I figured I could probably bump the limiter up a few hundred rpm with my set-up, not sure if it is really worth it though at this stage.

  7. #7
    monaroman76's Avatar
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    Guys? Who can report their experiences with the Riva ecu and 48# and stock base pressure? Im seeing 11.0:1 ish on the trailer, and it seems a little leaner when warmed up and on the water. Maybe mid 11's

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