idle timing with Holley HP efi
#31
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Id be more worried about detonation. What octane fuel?
One issue I had , was the one holley iac harness i had, was wired for a chrysler iac. Well, plugging that into the LSX style IAC I had, everything seemed fine. Problem was , the ecu was commanding iac, and giving feedback, but the iac pintle was simply not doing anything. I couldnt figure out why the hell i was getting significant rpm drop when putting in gear. Chased my tail on that for a minute. It was a matter of swapping two pins to fix.
One issue I had , was the one holley iac harness i had, was wired for a chrysler iac. Well, plugging that into the LSX style IAC I had, everything seemed fine. Problem was , the ecu was commanding iac, and giving feedback, but the iac pintle was simply not doing anything. I couldnt figure out why the hell i was getting significant rpm drop when putting in gear. Chased my tail on that for a minute. It was a matter of swapping two pins to fix.
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SB (03-25-2021)
#34
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Your effective compression ratio is 21.5:1
Good luck with that in a marine endurance motor .
Good luck with that in a marine endurance motor .
#35
That’s Jim Shofner, owner of Arizona Speed and Marine. He actually designed and built that intake and continues to manufacture all blue top motor intakes. He is currently designing a wiring harness that will convert any Holley ecm to work with just about any mercruiser engine.
Last edited by Cerberus66; 03-25-2021 at 12:53 AM.
#36
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Yet youre here seeking advice.....
Thats a bold statement, theres quite a few really sharp guys (and builders) on this thread offering help. Not the first "1400hp" procharged build we seen here over the years.
Thats a bold statement, theres quite a few really sharp guys (and builders) on this thread offering help. Not the first "1400hp" procharged build we seen here over the years.
The following 2 users liked this post by MILD THUNDER:
cheech (03-25-2021), F-2 Speedy (03-25-2021)
#38
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Another know it all ... We`re all idiots cause the 100 year old tuner knows more than anyone of us.
At $9/gallon I bet the thing don`t get run for extended periods so maybe that`s what`s saving your a$$.
Never once heard a good thing about Speed and Marine, quite the opposite.
Good luck, ask your builder any questions from now on .
At $9/gallon I bet the thing don`t get run for extended periods so maybe that`s what`s saving your a$$.
Never once heard a good thing about Speed and Marine, quite the opposite.
Good luck, ask your builder any questions from now on .
#39
I didn't come here to diss any of you or even listen to you guys call out a "100 year old tuner" etc. thanks for your input. check yourself or bring your bada$$ boat to Havasu or the Lake Powell Challenge and lets square up. Id rather ask you guys here to engage in some chat about idle tuning and learn than anything else. Good luck fellas.
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Panther (03-26-2021)
#40
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Never heard of them.
Do you know, is this who he's using for base engines or blocks? https://psiengines.com/
Otherwise, I missed it in the 1st picture with the crossover in place.
Anyone else seen big block heads with water ports for a crossover?
Answered my own question. A Gen 7 thing. Never knew.
Last edited by cheech; 03-25-2021 at 01:29 PM.