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-   -   bucking under sudden accelleration (https://www.miataturbo.net/megasquirt-18/bucking-under-sudden-accelleration-13229/)

Dow.tom 10-09-2007 05:51 PM

bucking under sudden accelleration
 
Hey, i still haven't turbo'd the car but i notice while at slower speeds (more noticeably) if i stab at the gas it bucks furiously than goes. Same if im cruising, and i push down to accel a little.(at higher speeds it shakes a little)

Ben 10-09-2007 05:58 PM

sounds like a lean spot
datalogs tell all.

Dow.tom 10-09-2007 06:07 PM

well i dont have a WB hooked up, will a datalog still show?

Ben 10-09-2007 06:18 PM

yeah, wb would be helpful, but the nb should be effective enough to fix this.

magnamx-5 10-09-2007 08:28 PM

Richen the fuel map a little then maybe try the AE settings being abit more agresvie

FoundSoul 10-09-2007 08:55 PM

Sounds like AE to me, the map 'may' be fine... it could be way fat, or way lean when you hit it, a datalog will show that, but AE is likely the fix either way. Read the AE section of the MegaManual or MS1 Extra manual for tuning info.

Dow.tom 10-09-2007 10:48 PM

okay i'll log once i get the car back and put it up, see what you all think of it.

akaryrye 10-10-2007 12:59 AM

for me, this only happens when my cruise map is too lean. I set my cruise to 16:1 above 3k, 15:1 2.2k-3k, and 14:1 between idle and 2.2k. AE seems to help with throttle response for me, but I suppose I dont often "stab" the throttle. I tend to ease into it even when I wanna accellerate quickly.


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