2G does ecu tuning increase performance?

[vince232]

hi good day guys i just installed a 4g63t from i think from an eagle talon (dont know the difference to eclipse)
and i somewhat feel the engine is so much weak from my stock 63t with a mines ecu from an evo 1. i cant even feel the boost with the eclipse engine. anyway can a simple retuning of the ecu increase performance? i think my ecu is e2t37876. do i need to buy a new ecu for tuning ?

 

[XiholdtrueX]

Possibly a common head swap. Why would anyone do that to a galant though ...

6g galant vr4s came with a 4g64t , hence fourth the 7th and 8th gen galants have 4g64 sohc restricted by there head 4g63 heads breath better and the support for them are better, If you grab a 4g63 head and bolt it on you open up the restriction.

 

[AllanL]

6G galant vr4s came with 6 bolt 4G63t's, not 64t's...

based on the engine pic, head is likely a 2G head.

thermohousing is clearly off a 2g...

 

[vince232]

Well looking at that head and the water outlet the engine is from a galant vr4 possibly US spec as it comes out at the side and the pipe curves around your bypass pipe but in stock form it's ment to be like that for the big turbo intake stock rubber pipe.

So my guess is it's what ever spec came with the galant vr4 in the US, the valve cover is also red which does indicate a vr4 engine from factory, although it can be changed if course the water outlet is very less likely to be altered. So I'm 100℅ saying search specs on the vr4 and what ever that has stock including turbo is what you most likely have

Thanks! Searched a vr4 engine. And yeah really looks the same. Although i forgot to mention we changed the pipings to suit the engine bay and to utilize the evo 3 hood air vents. So if this is a vr4 engine does it mean this isna 1st gen 63t with 6 bolts?

Cant be a 64 since cars here are registered along with the engine. So definitely a 63

Hmmm drove it today. Seems like turbo kicks in at around 4k rpm and my rpm is locked at 6k

 

[Kryndon]

If you read this thread on the TD05/TD04/HL turbos http://www.dsmtuners.com/threads/td04h-vs-td05h-difference.375439/ , you will see the exact same turbo as yours being shown as a Mitsubishi RVR automatic. And like already mentioned, the head is definitely from a 2G DSM or the Galant VR4. Now, if they swapped the head onto a naturally aspirated block, be it a G63 or G64, we need to know what kind of pistons it has.

 

[7"exhaust_tip]

Hmmm drove it today. Seems like turbo kicks in at around 4k rpm and my rpm is locked at 6k

I'd check for boost leaks and proper wastegate operation regardless of anything else. That blow off valve looks kinda knock off and like it could potentially be leaking also. Are you sure its rpm limited to 6k or are you talking about fuel cut? Does it feel like you hit a brick wall at 6k rpm or does it just bounce of a rev limiter at 6k?

 

[vince232]

I'd check for boost leaks and proper wastegate operation regardless of anything else. That blow off valve looks kinda knock off and like it could potentially be leaking also. Are you sure its rpm limited to 6k or are you talking about fuel cut? Does it feel like you hit a brick wall at 6k rpm or does it just bounce of a rev limiter at 6k?

yep definitely a knock off BOV, the tachometer doesnt go up beyond 6k. also the old owner even had the tachometer labeled 6k limit.

also the one who installed the engine said something didnt fit in the exhaust system. gave it a look. something is not connected. im thinking that the exhaust manifold didnt fit into the catalytic converter.
cant imagine the catalytic converter not connecting to the exhaust pipes before the muffler because the exhaust system was from a stock lancer 95.

also it was noisy as hell

 

[AllanL]

this engine is highly likely from a JDM RVR with the valve cover repainted or swapped.

1) intake manifold is similar to any Evo123. only the JDM RVR has a similar intake manifold and coil pack layout. actually same intake manifold, except for the inlet port diameter. DSM 2Gs had a different in-mani...

2) throttle cable spring and TPS are opposite the location of 1Gs or 2Gs. only JDM RVRs used different throttle body layouts vs 1G or 2G or Early Evo....

3) thermohousing is similar to that of the early Evos, and 2Gs as well...

4) JDM RVRs had TD04s, DSM 2Gs had T25s, I think...

5) MHI part number E2T37876 is equivalent to MMC part number MD312467 ['2467']...3 socket ECU, while 2Gs had 4 socket ECUs...

 

[vince232]

this engine is highly likely from a JDM RVR with the valve cover repainted or swapped.

1) intake manifold is similar to any Evo123. only the JDM RVR has a similar intake manifold and coil pack layout. actually same intake manifold, except for the inlet port diameter. DSM 2Gs had a different in-mani...

2) throttle cable spring and TPS are opposite the location of 1Gs or 2Gs. only JDM RVRs used different throttle body layouts vs 1G or 2G or Early Evo....

3) thermohousing is similar to that of the early Evos, and 2Gs as well...

4) JDM RVRs had TD04s, DSM 2Gs had T25s, I think...

5) MHI part number E2T37876 is equivalent to MMC part number MD312467 ['2467']...3 socket ECU, while 2Gs had 4 socket ECUs...

hmm thanks for the info. looks like it is an rvr. other forum websites are suggesting it too.

do jdm rvrs have a black injector?

 

[emeracing]

To clear up on the turbo. The t25 Garrett turbo is 2gen eclipse/talon turbo aka td05 I believe the td05 is the t25 but not 100% sure on that part

 

[Airsign89]

@emeracing, no the t25 is a garret item, whereas the td05 series of turbos is built by MHI. The td05 14b being stock for the 1g, the t25 being stock on the 2g.