New tune for new engine?
#1
Broken FD
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New tune for new engine?
I am about to replace my stock reman for another stock reman. The reason I am replacing it is because I cracked a couple apex seals on the first one from boost creep. Sooooo.... Would I need to re-tune the car for the new engine. Even though it's the same as the old one??? (stock reman with stock ports)
ClifNotes---
Old engine--Stock reman
New Engine---Stock Reman
Do I re-tune it????
ClifNotes---
Old engine--Stock reman
New Engine---Stock Reman
Do I re-tune it????
#6
No it's not Turbo'd
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Theoretically it's not neccisary, but in practice a new motor can "Flow" differently.... I've also seen N.A. Rotors in turbo cars etc... on remans.... so theortically no retune is neccisray, but in practice you never know how a new motor will respond to the old fule / spark setup....
Case and Point. My 94 FD had been tuned by AEM conservative @ 10 PSI
My new(er) '93 that I replaced it with, got the same ECU, with the same mods, and blew a seal on an Onramp..... why ? How ? Different motor -> different quirks....
-DC
Case and Point. My 94 FD had been tuned by AEM conservative @ 10 PSI
My new(er) '93 that I replaced it with, got the same ECU, with the same mods, and blew a seal on an Onramp..... why ? How ? Different motor -> different quirks....
-DC
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#9
yes with that kind of a setup i would tune it... why you ask? new motors cost 2800. these cars are expensive so dont go cheap like a teenager its only 250... your making the right choice! wait till june steve kan is going to be in queens for tuning... i'll be there
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#11
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I'd have to think if your old motor was tuned right - in particular items like idle and response through accel - and you know your gas mileage and the car comes back with new engine and responds no differently. I'd just roll with it.
Though should one get better gas mileage w/o power steering? Is that change enough to justify retune? probably not.
But you did blow an engine which you believe was caused by boost creep. What are you doing about that?
Though should one get better gas mileage w/o power steering? Is that change enough to justify retune? probably not.
But you did blow an engine which you believe was caused by boost creep. What are you doing about that?
#12
Original Gangster/Rotary!
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He has an external wastegate, boost creep shouldn't be much of an issue.
After motor break-in, it wouldn't be a bad idea to make sure your AFRs at WOT are dialed in.
After motor break-in, it wouldn't be a bad idea to make sure your AFRs at WOT are dialed in.
#13
Broken FD
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Originally Posted by danny hahn
But you did blow an engine which you believe was caused by boost creep. What are you doing about that?
![Mad](https://www.rx7club.com/images/smilies/mad.gif)
The boost will hold at 15psi if I use the silencer in the exhaust but I am getting a boost controller for the new engine just to be sure.
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