Cant figure it out: Voltage drop when trying to start on AEM EMS (SR20) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Croustibat · 03-12-2012, 10:10 AM

can you try turning your engine "by hand" (big wrench on the damper pulley) and compare it to another engine ? It may just be your engine has high compression and all. Your Vdrop does not surprise me at all, it is quite normal considering the current the starter has to draw. I sometimes go as low as 8V when my battery is weak. I do use a standard ECU though (with a nistune on it). Are you sure the engine is in good condition ?

2_Liter_Turbo · 03-12-2012, 01:05 PM

Quote:

Originally Posted by Croustibat

can you try turning your engine "by hand" (big wrench on the damper pulley) and compare it to another engine ? It may just be your engine has high compression and all. Your Vdrop does not surprise me at all, it is quite normal considering the current the starter has to draw. I sometimes go as low as 8V when my battery is weak. I do use a standard ECU though (with a nistune on it). Are you sure the engine is in good condition ?

The engine is new and rotates great. It has a tad more resistance due to the supertech valve springs, but it's not that noticable.

03-12-2012, 10:10 AM	#1
Croustibat Nissanaholic! Join Date: Aug 2011 Location: France - Toulouse Age: 44 Posts: 1,851 Trader Rating: (0) Feedback Score: 0 reviews	can you try turning your engine "by hand" (big wrench on the damper pulley) and compare it to another engine ? It may just be your engine has high compression and all. Your Vdrop does not surprise me at all, it is quite normal considering the current the starter has to draw. I sometimes go as low as 8V when my battery is weak. I do use a standard ECU though (with a nistune on it). Are you sure the engine is in good condition ?