1jz E36 BMW frankensteining

[vr2turbo]

Dear All,

Just about 2 days ago, my legs were itchy and decided to rev the engine hard while stationary just to listen to its BOV sound. After a while, to my surprise, suddenly the engine transformed and the car just accelerate even crazier then before, the air intake suction noise is so soundly and car just sprints everywhere.

Until today i still can't figure out why the sudden transformation. Any one can help to clarify?

Thanks,
Ken

My reply will be some sort like bro. gunnerzz, revving the engine could have dislodge something, carbon piece stuck somewhere or cleared your injectors. You can see most mechanic when tuning, normal revs the engine......lol

 

[Mitevo7]

He's not wrong. JZs run hot. I'd go get a low-temp thermostat though.

I already have NTCL thermostat on standby, bought but havent install yet. The next oil change will install it. Hopefully that controls the temperature better.

Thanks,
Ken

 

[Mitevo7]

My reply will be some sort like bro. gunnerzz, revving the engine could have dislodge something, carbon piece stuck somewhere or cleared your injectors. You can see most mechanic when tuning, normal revs the engine......lol

Funny enough the revving was done by me, my colleagues all came out to check what was i doing as it was 745 am in the morning. They thought i am driving stock standard 318ci all this while Gotta love the stealth look.

Thanks,
Ken

 

[vr2turbo]

Funny enough the revving was done by me, my colleagues all came out to check what was i doing as it was 745 am in the morning. They thought i am driving stock standard 318ci all this while Gotta love the stealth look.

Thanks,
Ken

Under cover is best, like my VR now look like junk......lol

 

[Mitevo7]

Under cover is best, like my VR now look like junk......lol

Yes the best feeling was you caught some high performance car off guard on a toll launch

Thanks,
Ken

 

[Mitevo7]

Just modified radiator spare tank with a customized aluminium one. Adds blink to the engine bay. Also added a 500amp battery cable from alternator all the way back to the battery in truck. This rose the car's voltage to about 13.4-5v at idle will A/C on. Is this figure good enough?

Thank,
Ken

 

[Izso]

Just modified radiator spare tank with a customized aluminium one. Adds blink to the engine bay. Also added a 500amp battery cable from alternator all the way back to the battery in truck. This rose the car's voltage to about 13.4-5v at idle will A/C on. Is this figure good enough?

Thank,
Ken

That sounds like the more normal voltage (13.4 - 14.4V) on idle. Did you uprate the fan?

 

[sweelt]

Just modified radiator spare tank with a customized aluminium one. Adds blink to the engine bay. Also added a 500amp battery cable from alternator all the way back to the battery in truck. This rose the car's voltage to about 13.4-5v at idle will A/C on. Is this figure good enough?

Thank,
Ken

yup normal, as long voltage maintain. I get this figure too with battery relocated to trunk.
Remember to put fuse ehh...lol

 

[Mitevo7]

That sounds like the more normal voltage (13.4 - 14.4V) on idle. Did you uprate the fan?

Using stock BMW M43 fan, this thing spins strong and takes lots of amp.

 

[Mitevo7]

yup normal, as long voltage maintain. I get this figure too with battery relocated to trunk.
Remember to put fuse ehh...lol

Nice , the next thing my mech suggested is to uprate the negative battery terminal, as far as i did, i only uprated the positive one and leave the negative terminal stock. Will it be better to change that as well or just leave it be ?

Thanks,
Ken

 

[Izso]

Nice , the next thing my mech suggested is to uprate the negative battery terminal, as far as i did, i only uprated the positive one and leave the negative terminal stock. Will it be better to change that as well or just leave it be ?

Thanks,
Ken

Might as well change it. The negative is grounded to the car chassis right?

 

[vr2turbo]

Or just add more cables to earth the battery......

 

[sweelt]

Nice , the next thing my mech suggested is to uprate the negative battery terminal, as far as i did, i only uprated the positive one and leave the negative terminal stock. Will it be better to change that as well or just leave it be ?

Thanks,
Ken

Use the same 500Amp cable (if u have balance) for negative too. Just connect to any chassis bolts around trunk.
Like sifu's mentioned.

 

[Mitevo7]

Use the same 500Amp cable (if u have balance) for negative too. Just connect to any chassis bolts around trunk.
Like sifu's mentioned.

Just done it today. Hope the electricity supply is constant stable now.

 

[Mitevo7]

Might as well change it. The negative is grounded to the car chassis right?

Just done it, hope no more weird electrical issue from now on.

Thanks,
Ken