The Tuning Thread- EJ Motor

[Lance]

The GS options are nice.

Flanged up pipes for wastgates are extremely difficult to find for RHD vehicles. Pretty much have to always go custom.

Even here in the UK there are no off the shelf options- probably why most people here that run stock location turbos always go internal gate with the forge actuators.

[phaze]

One of the reasons I've been contemplating going ss so as to benefit from an EWG system that would be much cheaper than staying ts. If I could find a cheapish option of doing a uppipe EWG build I would def jump on it. Nice info guys

[Lance]

I know what you mean. I had to deal with that same predicament - and was one of the reasons why I went single scroll.

Regarding the Flanging your up pipe, There are a few local guys who can do it at a good price. Some may even do a mobile service for you since you will have to mock up the flange to make sure it clears (space is incredibly tight).

There is this guy on facebook with a page named "mike weld" that seems to be doing some good work.

[phaze]

If someone locally can indeed do a ts uppipe weld I may look into it...I've read posts indicating that one will need 2 wastegates to properly benefit from an ts EWG system. I've however also seen ppl try it with 2 pipes exiting the ts uppipe leading to 1 wastegate. I prefer the latter option. I may look into it....does anyone know of ppl locally running an EWG on ts system?

[Lance]

I would also think that you would need a dual waste gate setup for efficient and accurate boost control on a twinscroll setup. I remember when APS has a massive twin scroll rotated option they initially has a single wastegate setup but they eventually amended the design to a dual setup. I would like to assume it was for these reasons.

I know of one guy who attempted to run a single wastegate setup on a 20G Tomioka turbo. I don't recall what his exact issues were but he eventually scrapped the idea and went single scroll.

Dual wastegates would be very tight fit on a RHD vehicle (based on my experience trying to fit just 1) but i'm sure its doable. Probably more so for your latter option (the merged collector).

[phaze]

Youre right aps had a ts EWG design, and there have been some mention that the pulses from the exhaust gases needs to be separate. However I've also seen discussion that the pipes exiting the uppipe once measured correctly and can indeed merge at 1 wastegate without any issues (few ppl on nasioc have done it) and that dual wastegates may not be as necessary. It may be better, but I'm willing to give it a try I guess. Want to get an extra ts upppipe and mock it up for fitment and welds.

[Lance]

I would agree with you. If you are careful with how you design the individual wastegate outlets, then merging and using one wastegate should not be any real issue (and may be the only option for RHD cars).

Maintaining separation and equality is important for efficiency- It becomes a similar logic to equal vs unequal length headers and why equal length is a more efficient design.

[phaze]

Agreed. Efficiency as it relates to flow is of the utmost importance with exhaust gases. If I go thru with it..I'll post pics and update the group as I progress.

[Lance]

What's everyone up to these days?

[phaze]

Actually just got a contact for Mike....going to see if I can get him to make up what I mentioned and give this thing a try. If all goes well my car should be sounding like a train soon.....heh heh

[Lance]

Actually just got a contact for Mike....going to see if I can get him to make up what I mentioned and give this thing a try. If all goes well my car should be sounding like a train soon.....heh heh

Nice man.

From pictures, his bends, cuts and beads look solid.

keep us updated!

[castortroy]

Port and gasket matching atm, also contemplating clutch options - twin disc or stage 2

[Aaron 2NR]

If you gonna be racing and launching go twin

Both bunny and myself destroyed a stage 2 after 4 d&w events

[boosted_wrx]

What's up fellow Subaru enthusiast........ I'm 16, ( I know I'm too young, but really like Subaru and wanna get involved in Motorsport, plus it keeps me out of trouble) currently doing a Wrx build (real tight budget) looking for a reasonable tuner....... Anyone have any recommendations, I preferably someone with their own wideband.

[Aaron 2NR]

rtune

[boosted_wrx]

What's his average cost ?

[boosted_wrx]

Road tune right ?

[rylan1996]

RTune is 2500 if I'm correct (not 100% sure) road / Dyno tune and you have to factor in dyno time costs day / night also.

[Lance]

The vehicle owner usually pays for the dyno time.

You should probably have a chat with the tuner though. Prices can vary based on how elaborate the tune will be- launch control, NLTS, anti-lag etc. RTune is a reasonable guy, he will work with you.

Once you work out the details with tuner then he can provide a more accurate pricing structure.

[Aaron 2NR]

RTune is 2500 if I'm correct (not 100% sure) road / Dyno tune and you have to factor in dyno time costs day / night also.

thats for dual map sir....

[boosted_wrx]

Nice ....... So the wrx is compatible with dual map ? It's an sdm 04 Wrx ( non avcs )

[boosted_wrx]

.

[Lance]

That's a very confusing piece of terminology that can imply one of two things. Either it's map switching capability on the fly or just 2 alternative map files (tunes) that you would need to flash onto the ecu when required. I suspect it's the latter.

[Aaron 2NR]

call the man and talk to him 689-5226, boosted wrx...


from my recollection thats the price of the Group N map...excluding dyno time....

most of the tunes are being done on the dyno because of the 80kmh law implementation on the highways....

[boosted_wrx]

Ok thank you fellas very much........ I'll organize with Mooloo for the dyno, know them well. Thanks again for the advice.

[racedriverpro]

Considering swapping in a vf44 for the 38 and tuning accordingly. Whats the average price of a 44 and what experience and views u all have on it?

[Lance]

There isn't a lot of information around regarding the V44- Just that it seems to be a bigger unit that the 38.

Information online suggests that the vf38 has a smaller compressor side than the vf37- so it will spool better but may lack the top end that the 37 has.

I want to assume that the vf44 may be somewhere in the middle.

[castortroy]

Not sure who has VF44's perhaps aditi or joel may have.

[racedriverpro]

I can get a td04 hla 19t for 4k

[boosted_wrx]

Completely off topic..... I have a Wrx, it has an egt sensor in the stock uppipe but my after market uppipe doesn't have a bung for it, (car is going to tune after) is it safe to disconnect the sensor completely or get a bung tapped for it ?