Initial EFR 7670 dyno results
#201
1308ccs of awesome
iTrader: (9)
EFR IWG Rx7 Turbo Manifold
EDIT: here is the picture of it:
Last edited by eage8; 08-08-15 at 08:57 AM.
#203
Exhaust Manifold Leak
Yeah I think its easy to make and it wont take 4 hours with the engine out of the car, at least if u want something funtional that doesnt have to look as pretty as that above.
#204
Yeah, something like that simple bracket would probably take me 8hrs including rooting around the scrapyard to find the piece of stainless and making it look nice in the end.
If its something you enjoy and you have the time, that is great.
If you want to race next weekend, its awesome Turblown offers the piece at $200.
If its something you enjoy and you have the time, that is great.
If you want to race next weekend, its awesome Turblown offers the piece at $200.
#206
#208
And probably hours of trial and error to get the angle right. The point is that its not a simple matter of getting a piece of steel cut to shape with a water jet. I'm not saying one couldn't make it on their own if they were so inclined, I'm simply pointing out that the price point isn't as ridiculous as people think.
#212
Full Member
Join Date: Jul 2011
Location: Alberta Canada
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I built mine in about an hour out of some plate steel. 30-40 minutes cutting out the shape and drilling the holes and the rest of the time was spent bending it until the wastegate canister lined up perfectly. It's not the prettiest but it's hidden anyways. I have pictures somewhere but I'm on my phone.
#214
destroy, rebuild, repeat
iTrader: (1)
first test drive today for me, but only at spring pressure at 10psi. No creep at all. I agree, the power band is now a lot like my WRX too haha. More boring actually and not the typical sling-shot feeling i would get from my old turbo (60-1, p-trim), although peak power seems to be about the same.. maybe 300whp. you can really hear the anti-surge housing working at part throttle! I would like to turn up the boost, but not sure how hard I can push it on 9.4 rotors and pump gas
Last edited by gxl90rx7; 08-26-15 at 06:27 PM.
#215
Rotary Freak
iTrader: (7)
first test drive today for me, but only at spring pressure at 10psi. No creep at all. I agree, the power band is now a lot like my WRX too haha. More boring actually and not the typical sling-shot feeling i would get from my old turbo (60-1, p-trim), although peak power seems to be about the same.. maybe 300whp. you can really hear the anti-surge housing working at part throttle! I would like to turn up the boost, but not sure how hard I can push it on 9.4 rotors and pump gas
#217
destroy, rebuild, repeat
iTrader: (1)
Here is my dyno at 10psi. i still have a 3" cat on it and 9.4 rotors. needs more boost! and maybe lose the cat
THis was on my FD, but comparing to my old BNR stage III FC TII dyno at 15psi, they both had same peak power, but EFR makes it with 5psi less boost. and at 3000rpm the EFR makes about 50 more hp. awesome
THis was on my FD, but comparing to my old BNR stage III FC TII dyno at 15psi, they both had same peak power, but EFR makes it with 5psi less boost. and at 3000rpm the EFR makes about 50 more hp. awesome
Last edited by gxl90rx7; 10-17-15 at 06:23 PM.
#218
Rotary Enthusiast
iTrader: (3)
Here is my dyno at 10psi. i still have a 3" cat on it and 9.4 rotors. needs more boost! and maybe lose the cat
THis was on my FD, but comparing to my old BNR stage III FC TII dyno at 15psi, they both had same peak power, but EFR makes it with 5psi less boost. and at 3000rpm the EFR makes about 50 more hp. awesome
THis was on my FD, but comparing to my old BNR stage III FC TII dyno at 15psi, they both had same peak power, but EFR makes it with 5psi less boost. and at 3000rpm the EFR makes about 50 more hp. awesome
#225
Enthusiast
iTrader: (5)
Had the opportunity to run against an EFR 7670 FD at DGRR over the weekend in my FD still on the sequential system
His setup:
EFR 7670, 10 psi, cosmo irons all else stock porting, high compression rotors, bolt-ons... Dyno'd 300 rwhp at 10 psi. Hits max boost around 2000 rpm.
My setup
Stock seq. twins. PFC, PFS intercooler, RB exhaust, stock everything. Low boost around 11-12 psi and high boost around 14-15.
First run was a 4th gear pull at 2000 rpms. I selected high boost this run and walked away from him rather quickly.
2nd run was the same 4th gear pull at 2000 rpms but this time in low boost. Was a lot closer, he actually out spooled the first turbo by about a car length then when the second turbo came online it looked like I was starting to reel him back in..we ran out of road.
Random 3rd gear pulls in high boost seemed to favor the twins and on low boost went to the driver.
In summary it definitely is a quick spooling setup but it gives up the ghost up top without really turning up the boost. Would be a nice exchange for the twins if wanting to simplify the setup.
His setup:
EFR 7670, 10 psi, cosmo irons all else stock porting, high compression rotors, bolt-ons... Dyno'd 300 rwhp at 10 psi. Hits max boost around 2000 rpm.
My setup
Stock seq. twins. PFC, PFS intercooler, RB exhaust, stock everything. Low boost around 11-12 psi and high boost around 14-15.
First run was a 4th gear pull at 2000 rpms. I selected high boost this run and walked away from him rather quickly.
2nd run was the same 4th gear pull at 2000 rpms but this time in low boost. Was a lot closer, he actually out spooled the first turbo by about a car length then when the second turbo came online it looked like I was starting to reel him back in..we ran out of road.
Random 3rd gear pulls in high boost seemed to favor the twins and on low boost went to the driver.
In summary it definitely is a quick spooling setup but it gives up the ghost up top without really turning up the boost. Would be a nice exchange for the twins if wanting to simplify the setup.