JDM Engine

[q2driver]

Hello,
I did a quick search and found no answer for my question. What are the differences between the JDM EG 33 and the US spec engine? I emailed a question to the sellers and they say the engines are interchangable. They use the same ECU and Wiring harness. Any more knowledge would be wonderfull. Thanks...

Dave

[Suby Fan]

im not sure on the SVX but you might need to swap out the intakes... i know some JDM's are carb and fuel injection in the US

[Budfreak]

im not sure on the SVX but you might need to swap out the intakes... i know some JDM's are carb and fuel injection in the US

:confused::confused::eek:

A CARB on a SVX?!:eek: That would be strange to see.:rolleyes:

[Suby Fan]

:confused::confused::eek:

A CARB on a SVX?!:eek: That would be strange to see.:rolleyes:

sorry i ment on other engines... i dont think a dhoc engine with a carb exists... for example geo metro engines are carb every where elce in the world

[Trevor]

im not sure on the SVX but you might need to swap out the intakes... i know some JDM's are carb and fuel injection in the US

Carb AND fuel injection is something I would wish to study. I have been assuming that my JDM has none of this. But hold it while I have a look under the bonnet(hood).

Sorry to make a joke out of what is probably an unfortunate mistake and no offence intended. :o

[b3lha]

All SVX engines are the same (except for the JDM twin-turbo police special :rolleyes: )

The ECU programming is different, presumably this is to accomodate regional fuel differences. It is rumoured that the JDM cars are optimised for the 100+ octane fuel that they get in Japan. My JDM cars definitely run much better on 98-99 than the standard 95 we get here in the UK.

[TomsSVX]

Engines are the same, the only differences are in the ECU. People like Silverspear have Open loop ECU's which do not function off emission standards and run on a basis of optimal performance for regions allowing it

Tom

[intelisevil]

Engines are the same, the only differences are in the ECU. People like Silverspear have Open loop ECU's which do not function off emission standards and run on a basis of optimal performance for regions allowing it

Tom
Tom

What could that do for those of us in the US that don't have to worry about smog checks?

Dan

[Chiketkd]

Engines are the same, the only differences are in the ECU. People like Silverspear have Open loop ECU's which do not function off emission standards and run on a basis of optimal performance for regions allowing it

Tom
Very true. His SVX doesn't have any O2 sensors...

[floatingkiwi]

Very true. His SVX doesn't have any O2 sensors...

Immmmmm, interesting, wonder if ECUTune could bring out something to take advantage of that particular ECU (and it's programming).

The JDM ECU is definitely different. Note the incompatibility of LAN's chip, for example.

Matt

[TomsSVX]

I do not see a big enough gain to buy and ship an ECU from the middle east. not only will sourcing one be a HUGE pain in the arse but it will cost more than it is worth. The Stage 2v5 ECUtune would probobly be more worth your while. Additionally I am not sure how well that ECU will work with the USDM wiring setup and whatnot.

Tom

[Speedklix]

There are those two dragsters that have carb feed eg33's in em. :)

[Nemesis Destiny]

Also, according to a recent or semi-recent post I read from LAN, the USDM ECU runs the EG33 quite well with the O2 sensors unplugged. If I recall what he said correctly, the ECU ignores the lack of input from the O2 sensors. Apparently the engine runs even better without them.

[TomsSVX]

There are those two dragsters that have carb feed eg33's in em. :)

Are you sure about that? I mean there is no way for them to have used anything but a distributorless ignition so why change from Multiport Fuel Injection and downgrade to Carburation? Just doesn't make any sense:confused:

Tom

[lhopp77]

Are you sure about that? I mean there is no way for them to have used anything but a distributorless ignition so why change from Multiport Fuel Injection and downgrade to Carburation? Just doesn't make any sense:confused:

Tom

Yes, the Aragona cars were carbureted. You can even see it in the pictures of them. Actually 2 carburetors. I don't think he was running gasoline though.

Lee

[TomsSVX]

Could have been running alchohol but more than likely race fuel. Interesting to know that they changed over to carbs:confused:

Tom

[THAWA]

I do not see a big enough gain to buy and ship an ECU from the middle east. not only will sourcing one be a HUGE pain in the arse but it will cost more than it is worth. The Stage 2v5 ECUtune would probobly be more worth your while. Additionally I am not sure how well that ECU will work with the USDM wiring setup and whatnot.

Tom

Why would you source a JDM item from the middle east, and not from Japan where it originated/was originally imported from and is much more abundant?

[TomsSVX]

Because the JDM ECU is actually a downer in the states with it's rediculously low speed limiter. The middle eastern ECU that Silverspear has w/o the use of 02 sensors and no smog restrictions is the choice one, but like I said, finding it and it's capatability may be a downfall

Tom

[lhopp77]

You can actually see the carbs in the picture, but it looks like it would not be practical at all for a car. There is a better picture on here someplace of the engine compartment only showing the carb installation. I just couldn't find it.

Lee

[TomsSVX]

aw come on, who wouldn't want 2 HUGE scoops shooting out of their hood.??;)

Tom

[Nemesis Destiny]

aw come on, who wouldn't want 2 HUGE scoops shooting out of their hood.??;)

TomOn the Dodge Stratus forums that I used to frequent, one of the members did a custom supercharger set up on his V6 equipped car, but there is basically no room for anything under the hood, so he had to cut his hood. He made a huge bulge in it with some custom fibreglass, and everyone made fun of it.

This pissed him off due to the large amount of hard work that went into it, and the fact that a lot of stratusphere.net members were constantly whining that the cars have "no potential" because they don't have an instant-gratification aftermarket like the Civic or 240SX crowds do. So he does this, turns his 17-second grocery-getter into a low 13-second drag strip monster (http://www.rezlo.com/Pages/Toys/Cirrus/cirrus.htm), and everyone complains because it looks odd.

I'm not sure what the point of me saying that was; I guess it just reminded me and I felt like sharing.

[Suby Fan]

On the Dodge Stratus forums that I used to frequent, one of the members did a custom supercharger set up on his V6 equipped car, but there is basically no room for anything under the hood, so he had to cut his hood. He made a huge bulge in it with some custom fibreglass, and everyone made fun of it.

This pissed him off due to the large amount of hard work that went into it, and the fact that a lot of stratusphere.net members were constantly whining that the cars have "no potential" because they don't have an instant-gratification aftermarket like the Civic or 240SX crowds do. So he does this, turns his 17-second grocery-getter into a low 13-second drag strip monster (http://www.rezlo.com/Pages/Toys/Cirrus/cirrus.htm), and everyone complains because it looks odd.

I'm not sure what the point of me saying that was; I guess it just reminded me and I felt like sharing.

how many ADD kids does it take to screw in a light bulb?
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LETS RIDE BIKES!

[Nemesis Destiny]

Come on, it was semi-relevant... brought on by the whole "aw come on, who wouldn't want 2 HUGE scoops shooting out of their hood.?" thing ;) :p:p

[intelisevil]

Also, according to a recent or semi-recent post I read from LAN, the USDM ECU runs the EG33 quite well with the O2 sensors unplugged. If I recall what he said correctly, the ECU ignores the lack of input from the O2 sensors. Apparently the engine runs even better without them.
I think I remember the thread you're talking about.

Seat of the pants dyno said power was up :) , fuel economy went into the toilet :( .

Dan