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Old 06-08-2011, 02:29 PM   #1
motocooney
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09 Mazdaspeed3

Default Tuning a Built Engine

I have a question.

Lets say my car (05 STI) is already tuned for the mods it has and runs great. If I were to throw in a Rallispec built block with stock compression, besides taken it easy for the break-in, what changes would I really need to make to the tune?
No new mods. Nothing would change but the internals.

I realize that it would benefit me to retune and make use of the stronger components after break in. But do I HAVE to?

thanks
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Old 06-08-2011, 02:37 PM   #2
renosubby
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www.Mayhemtuning.com

Default

Quote:
Originally Posted by motocooney View Post
I have a question.

Lets say my car (05 STI) is already tuned for the mods it has and runs great. If I were to throw in a Rallispec built block with stock compression, besides taken it easy for the break-in, what changes would I really need to make to the tune?
No new mods. Nothing would change but the internals.

I realize that it would benefit me to retune and make use of the stronger components after break in. But do I HAVE to?

thanks
no shouldnt have too.
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Old 06-08-2011, 02:42 PM   #3
motocooney
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Originally Posted by renosubby View Post
no shouldnt have too.
Damnit Cory, I was gonna just text you but....didn't wanna bug you with theoretical car questions.

Thinking about buying my old car back The dude blew the motor and put a Rallispec shortblock in it. Makin sure it's something i wanna deal with.
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Old 06-08-2011, 03:42 PM   #4
the suicidal eggroll
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The only thing you MIGHT have to do is change the listening range for the knock control system, depending on how noisy the new block is. Other than that, it should work fine.
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Old 06-08-2011, 04:46 PM   #5
motocooney
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Originally Posted by the suicidal eggroll View Post
The only thing you MIGHT have to do is change the listening range for the knock control system, depending on how noisy the new block is. Other than that, it should work fine.
Apparently the Cosworth piston and other parts Rallispec uses are supposed to make for a "quiet" engine. But I know what you're saying. How would you go about determining that these changes need to be made?
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Old 06-08-2011, 04:48 PM   #6
the suicidal eggroll
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If you see a lot of false knock at partial throttle and cruise, namely <2k RPM and <1.0 load, that's when I would raise it. False knock would be knock that doesn't seem to respond to any changes you make in AFR or timing in the affected cells.
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Old 06-08-2011, 05:13 PM   #7
tomtom84
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how do you adjust that range in rom raider?

feedback/fine/rough correction range load?
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Old 06-08-2011, 05:16 PM   #8
the suicidal eggroll
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Yep, should be pretty straight forward.
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