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Haven't been on here for a few years but I'm out of touch of the current turbos on offer. 

 

I'm looking to get the car retuned,  remove flexi fuel and upgrade turbo but I would like to hit same power on 98 with new turbo as the setup with e85. 

 

The car has had everything modified on it,  the short block is built to take 1000hp but I only run it at 405kwatw on e85 30psi boost on the very first gen gtx3071 r turbo with 0.63 ex  housing. 

 

I want to replicate these numbers but with a new generation turbo which should give at least 20% power increase over current turbo but been out of touch so interested what the beat choice would be these days,  I'm leaning towards g30 660 or 770 options but open to all turbo types. Even thinking gt25 would suit. I Got no interest in Steve murch turbos so discount him. 

 

Help would be appreciated. Txs

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I haven't looked into any Subaru results turbo wise in a while, but I think g25 or g30 are still the best Garrett has to offer. Or EFR which I know f*** all about..

I would love to see what a g25 or g30 would do.

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If you interested in what the G25 or G30 will do, then Speed Academy has a through video on it with their STI. 

 

Links here:

 

 

They then upgrade to the G30-660 

 

 

But before most of that, they have a direct comparison on the dyno with another GTX3071R

 

 

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1 hour ago, Bobby said:

If you interested in what the G25 or G30 will do, then Speed Academy has a through video on it with their STI. 

 

Links here:

 

 

They then upgrade to the G30-660 

 

 

But before most of that, they have a direct comparison on the dyno with another GTX3071R

 

 

Thanks some good videos. I am leaning towards going g25 660 as I want better response. The last video is with a gen 2 version of my turbo,  I only have the gen 1 turbo so perhaps this would give me what I want on 98 Ron and same boost. Seems g30 660 definitly would. 

 

I'm not that bothered about higher hp up top, more interested in response. 400wkw is quick enough really. Just unsure if the g25 will get there on 98 and not the e85 I needed on the old 3071 turbo. 

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18 hours ago, Bobby said:

It probably wont get there on 98. 

 

 

Maybe I need to just keep the flexi fuel and go g30 . Nice video , haven't seen that before dont think i would use pbms was going e and h but the fact they lock the ecus after tuning has stopped me.pickimg them too. 

 

340 kwatw is good just wished he stated boost pressure. As mine is not a daily i should probably stick to g30 770. Need to find tuner now. 

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2 hours ago, Username said:

Maybe I need to just keep the flexi fuel and go g30 . Nice video , haven't seen that before dont think i would use pbms was going e and h but the fact they lock the ecus after tuning has stopped me.pickimg them too. 

 

340 kwatw is good just wished he stated boost pressure. As mine is not a daily i should probably stick to g30 770. Need to find tuner now. 

I may be wrong but don't quite a lot of tuners lock the ECU's? 

 

Just had my car tuned at EnH and happy as with the result and they a good folk to deal with.

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17 hours ago, ginganinja said:

I may be wrong but don't quite a lot of tuners lock the ECU's? 

 

Just had my car tuned at EnH and happy as with the result and they a good folk to deal with.

Not in my experience to be honest, car has been tuned by:

 

GCP

DTech

HItech 

 

None of these locked the ecu. 

5 hours ago, preim said:

I would also have no concerns recommending Dave at Tune Technic if you are closer to West Auckland.

Haven't heard of them, dont mind travelling if tuner is worth it.

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If you're happy to wait a few months, you can get some real world experience off me with my EFR8474. 2.5L sleeved block etc. Shooting for 500kw. All the pre work into choosing all the parts indicate should hit full boost by 3500-4000rpms and pull all the way to 8000rpm at about 30psi on e85. 

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