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This puts into perspective how good the EFR series are tbh, similar spec SR with EFR7163s spool marginally better than this and flow ~10% more than a G25-550.
Each setup is different, but yeah, I'm not seeing much reason to take a G25-550 over the EFR 7163 at this point. I'm still curious about G25-660 results, but I doubt it would be enough to get me to sell my EFR 7670.
Each setup is different, but yeah, I'm not seeing much reason to take a G25-550 over the EFR 7163 at this point. I'm still curious about G25-660 results, but I doubt it would be enough to get me to sell my EFR 7670.
I went a different route with the EFR I redesigned the bonnet latch and have a tucked dual pass radiator. I can now fit any size IWG T4 EFR in the bottom mount position.
It's easy to fit an EFR, but I can understand you don't have much flexibility with off the shelf parts.
Personally I'd like to see how these turbos work in the little T25 housing. Also I'm still hoping they come out with a T4 divided version. Seems like the turbine flows a ton, and doesn't need a larger turbine housing.
Supposedly the G30 is going to be released at SEMA.
Personally I'd like to see how these turbos work in the little T25 housing. Also I'm still hoping they come out with a T4 divided version. Seems like the turbine flows a ton, and doesn't need a larger turbine housing.
Supposedly the G30 is going to be released at SEMA.
I'm not a big fan of virtual dyno, in any case I had the opportunity to compare my car (g25-660 .92, s2 cams etc) with an other evo 8 with stock cams, stock manifold and Tomei arms. Peak boost is 1.9 bar (Garrett) and 1.8 bar (Tomei) while the top-end boost is 1.6 bar (Garrett) and 1.7 bar (Tomei).
Clearly the maximum power is way different since that stock cams are quite restrictive but the spool region give you an idea of the differen response of those turbos. Here the data of the Garrett:
Isn't the Tomei ARMS M7960 just a 20G/TD06SL2? They are pretty laggy due to the large (and arguably mismatched) turbine wheel. Aren't they all IWG, too? Honestly, any billet wheel stock-frame turbo will put one of those to shame.
Isn't the Tomei ARMS M7960 just a 20G/TD06SL2? They are pretty laggy due to the large (and arguably mismatched) turbine wheel. Aren't they all IWG, too? Honestly, any billet wheel stock-frame turbo will put one of those to shame.
So you really think that a standard evo 9 turbo with a 20g billet wheel is capable of: 1) 60lib/min of maximum flowing, 2) >79% of efficiency, 3) 24.5 lib/min of exhaust flowing (like the g25-600 .92) and a stock-like spool?. Forget about commercial dyno image and show me some real data, I'm really interested.
300tq at 4k with the .92 housing is pretty darn good. Cant wait to see what the .72 housing will do on 93/e85... it may give me a reason to move away from stock frame.
300tq at 4k with the .92 housing is pretty darn good. Cant wait to see what the .72 housing will do on 93/e85... it may give me a reason to move away from stock frame.
Hard to say until we get more data, but I'd guess improvement in spool between 250-500rpm. Yeah... I know, a bit of a broad guess range.
I'm not a big fan of virtual dyno, in any case I had the opportunity to compare my car (g25-660 .92, s2 cams etc) with an other evo 8 with stock cams, stock manifold and Tomei arms. Peak boost is 1.9 bar (Garrett) and 1.8 bar (Tomei) while the top-end boost is 1.6 bar (Garrett) and 1.7 bar (Tomei).
Clearly the maximum power is way different since that stock cams are quite restrictive but the spool region give you an idea of the differen response of those turbos. Here the data of the Garrett:
So you really think that a standard evo 9 turbo with a 20g billet wheel is capable of: 1) 60lib/min of maximum flowing, 2) >79% of efficiency, 3) 24.5 lib/min of exhaust flowing (like the g25-600 .92) and a stock-like spool?. Forget about commercial dyno image and show me some real data, I'm really interested.
I wasn't knocking the G25; I was commenting about the ARMS' performance. The M7960 is known to spool at least 500 RPM slower than stock, and taps out at 44 lb/min. Any TD05 Evo turbo with a billet wheel will outperform the M7960 in spool and in peak. The G25 obliterated the ARMS, as it should have, but the M7960 is a poor comparison for outright power due to its mismatch. I still want to know what the .92 G25-660 does all out, and in T4 TS.
Oct 17, 2018, 07:24 AM
