PDA

View Full Version : Having problems with my RB swapped s13.

mando240
08-17-2011, 09:54 PM
High all well here is my mods first....

RB25DET S2
ISIS Manifold
q45 thorttle
TOP FEED 870cc injectros with resistor box.
Aeromotive FPR
FULLY NEW 0 miles rebuilt motor
Top mount manifold with 50 trim turbo
stock maf for now.
safc 2

Now here is the problem.
I had an sr20det before and never had this problem till i moved my battery to the trunk. The problem is the car does not pass 11.8 volts AT ANY POINT and the car runs LIKE CRAP i have tried tunning I'am a tuner... the problem is that the car just runs how it wants it will miss at times and other times nothing. Would drive good for about 5 minutes then GOES STUPID lean.

Now here is my guess that my battery ground is not good enough or something else is up. Can someone point me in the right direction. I really like the rb25det but im getting fed up with it and getting really close to get rid of it.

I will try putting the battery in the front tomorrow see how it goes i will let u guys know. But in the mean time please someone point me in the right direction or share any similar issues. Thanks
Sileighty_85
08-18-2011, 04:53 PM
Moar grounds.

Moar grounds from battery to chassis and Engine to chassis
ultramagnus
08-18-2011, 05:20 PM
make sure the grounding points are clean and the contact to the body and engine are not loose. oh and how is the connector to battery is that loose any little swivel will affect the electrical performance. is the wire gauge the same throughout the whole car ?
mando240
08-18-2011, 05:31 PM
ok i already fixed the issue with the low volts.
I connected auto scan scanner to my ecu and found the knock sensor was triggered but never again after erased.

BUT something wierd is happening. The car has sudden SPIKES on everything at once random. THE rpm on the auto scan scanner goes from 850-950 t 96,000!!! RPM WTF lol
and my BTDC Timing goes from 0-56 DEGREES LOL im thinking i have a fried ecu but its the second one i try :(. anyone have an idea.
Sileighty_85
08-18-2011, 06:47 PM
Bad CAS?

mslght
mando240
08-18-2011, 06:48 PM
Bad CAS?

mslght

thats what i was thinking ill try this tomorrow thanks