EFR wastegate wired open = CARNAGE!
BW EFR technical document states if over some length and operating in cold *** regions, then use - 6AN to help reduce flow resistance.
I built my car in New England. I was over 28" of feed line (or whatever the length was)
I built my car in New England. I was over 28" of feed line (or whatever the length was)
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If the line is longer than about 18” then it’s advised to step up to a -6 supply line. This is most critical for people living in cold climates.
Page 37
http://www.full-race.com/articles/efrturbotechbrief.pdf
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So I'm still leaning towards keeping it 6258 instead of going 6758. I track the car and don't want to be going through 6 speed transmissions regularly. I'll probably keep it tuned to around 300hp and may occasionally bump it up to 350 or so. I know the benefit of the 6258 is only a marginally faster spool, but that is an advantage, and if I don't plan on using the top end of the 6758,
is there any other reason to use it?
is there any other reason to use it?
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Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
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Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
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Not as often as I should, I have hit a few events in the last 4 months and I was definitely having a hard time keeping the pedal off the floor 
I'm not doing brake stands/drag clutch dumps so that's going to definitely help a lot. I broke my 5spd on an asphalt-patch-riddled landmine of a road when the wheels hopped and killed 3rd gear.
I'm not doing brake stands/drag clutch dumps so that's going to definitely help a lot. I broke my 5spd on an asphalt-patch-riddled landmine of a road when the wheels hopped and killed 3rd gear.
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Kind of drifting OT, but I'm going to be parting out my car soon, including the relatively new 6258, TSE built motor, freshly rebuilt 6 speed, 3.6 OS Giken diff plus a lot more. Any parts that don't sell locally right away I'll post for sale on mt.net.
It pains me to do that, but I came across a deal on a fully track prepped V8 Miata that I couldn't pass up. Sadly, I can't keep both cars. Because marriage.
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What about the 6 speed with 3.6 diff combo that many (including myself) run? It's almost identical to a 5spd/4.3 with an extra gear. Although I did run a 5 speed with a 3.9 rear end for a bit when I was running low boost with a stock engine and I think I enjoyed that ratio the most with the tall gearing.
Kind of drifting OT, but I'm going to be parting out my car soon, including the relatively new 6258, TSE built motor, freshly rebuilt 6 speed, 3.6 OS Giken diff plus a lot more. Any parts that don't sell locally right away I'll post for sale on mt.net.
It pains me to do that, but I came across a deal on a fully track prepped V8 Miata that I couldn't pass up. Sadly, I can't keep both cars. Because marriage.
Kind of drifting OT, but I'm going to be parting out my car soon, including the relatively new 6258, TSE built motor, freshly rebuilt 6 speed, 3.6 OS Giken diff plus a lot more. Any parts that don't sell locally right away I'll post for sale on mt.net.
It pains me to do that, but I came across a deal on a fully track prepped V8 Miata that I couldn't pass up. Sadly, I can't keep both cars. Because marriage.
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Do it. V8 vs turbo the reliability and peace of mind can't be beat. I've been tempted to get a 3.6 OSG for a while, I'll be on the lookout for your thread. Would probably drive down there from MSP to pick it up if the price is right
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What about the 6 speed with 3.6 diff combo that many (including myself) run? It's almost identical to a 5spd/4.3 with an extra gear. Although I did run a 5 speed with a 3.9 rear end for a bit when I was running low boost with a stock engine and I think I enjoyed that ratio the most with the tall gearing.
Kind of drifting OT, but I'm going to be parting out my car soon, including the relatively new 6258, TSE built motor, freshly rebuilt 6 speed, 3.6 OS Giken diff plus a lot more. Any parts that don't sell locally right away I'll post for sale on mt.net.
It pains me to do that, but I came across a deal on a fully track prepped V8 Miata that I couldn't pass up. Sadly, I can't keep both cars. Because marriage.
Kind of drifting OT, but I'm going to be parting out my car soon, including the relatively new 6258, TSE built motor, freshly rebuilt 6 speed, 3.6 OS Giken diff plus a lot more. Any parts that don't sell locally right away I'll post for sale on mt.net.
It pains me to do that, but I came across a deal on a fully track prepped V8 Miata that I couldn't pass up. Sadly, I can't keep both cars. Because marriage.
@Zoot
3.6 OS Gik. I'm interested
Do you have documentation/receipts for this?
Last edited by psyber_0ptix; Nov 18, 2016 at 05:37 PM.
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Originally Posted by
;1327708
;1327708
Yep. EFR wastegate flappers do this phenomenon.
Buy the 6758
Do this :
Buy the 6758
Do this :
@Chooofoojoo whats up with the two vband clamps on the exhaust ?
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