Efini twins or BNR Stage 3's
07-19-06, 08:52 PM
#51
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well call me stupid, but I want to keep the car in sequential, i mostly track it but do some driving. When it came time buy a new setup, it seems a good investment to get the BNRs, not to mention that they can come w/ ball bearing for a "measly" $700 more.
I have a couple of weeks yet to see them but all around performance on pump gas is what i am looking for. My brother races 'spec miata' and that damn $8,000 car on race tires hangs w/ a 7 in the corners but the HP comes to play every where else, so... For me it is good track lines, good acceleration and when i can do it, late braking.
I have a couple of weeks yet to see them but all around performance on pump gas is what i am looking for. My brother races 'spec miata' and that damn $8,000 car on race tires hangs w/ a 7 in the corners but the HP comes to play every where else, so... For me it is good track lines, good acceleration and when i can do it, late braking.
07-19-06, 09:29 PM
#52
Originally Posted by Boostn7
At 17psi or less the stock twins lasted without any problems with stock ports.
After porting the motor they no longer maintained boost at higher boost, therefore I ran 19psi for them to maintain 16-17psi @ 7.5krpm or 20psi to get 17-18psi and only then they start smoking after 6 months of constant abuse.......or maybe it was all the empty-highway pulls to 170-180mph with bikes and cars(yes, I race it beyond a 1/4 mile)
hmmmmm, maybe all the times it ran 125mph thru the 1/4 in a 2940lb car on pump gas, obviouly making well over 400rwh :-)
After porting the motor they no longer maintained boost at higher boost, therefore I ran 19psi for them to maintain 16-17psi @ 7.5krpm or 20psi to get 17-18psi and only then they start smoking after 6 months of constant abuse.......or maybe it was all the empty-highway pulls to 170-180mph with bikes and cars(yes, I race it beyond a 1/4 mile)
hmmmmm, maybe all the times it ran 125mph thru the 1/4 in a 2940lb car on pump gas, obviouly making well over 400rwh :-)
Tim
07-19-06, 10:22 PM
#53
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Originally Posted by Tim Benton
What ecu were you using and was it with a 3 bar map sensor?
Tim
Tim
07-19-06, 10:29 PM
#54
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Originally Posted by xblazinlv
Was the 402hp at the wheels made on a mustang dyno or a dynojet? And you were at 17psi for this HP level correct?
Your trap speeds are impressive for a set of stock non sequential twins.
Your trap speeds are impressive for a set of stock non sequential twins.
Looking at my dyno logs from that day...
Max boost = 1.14kg/cm2
Inj duty = 92 % ( 4 x 850cc inj & walbro 255hp)
water temp= 86 C
air temp = 36 C
A/F= 10.90, 11.0, 10.8 across
1.14kg/cm2= 16.2 psi as per commander but my boost gauge indicated 17.5psi which is also almost max for the oem map sensor.
Thanks.... stock twins offer a nice power curve:
@ 4.5krpm= ~ 290rwh
@ 5.0krpm= ~ 330
@ 5.5krpm= ~ 370
@ 6.0krpm= ~ 390
@ 6.5krpm= ~ 398
@ 7.0krpm= ~ 400
07-19-06, 10:34 PM
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Originally Posted by matty
hey boosnt...i been runnign 15psi for 3-4 yrs now. any idea why i cant make more than 15psi even if i turn up my power fc. i have open exhaust dp, resonated mp, and rb dual tip exhaust as well as all the boltons. i can control boost perfectly with power fc. i can run 12 psi no spikes or creeps or anything...just cant run more than 15psi. car has 50k miles. tks
maybe cause they are still sequential?
maybe cause they are still sequential?
JD
07-19-06, 10:37 PM
#56
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Originally Posted by Tim Benton
What ecu were you using and was it with a 3 bar map sensor?
Tim
Tim
I did run the oem map sensor when I was running 17psi max.
It maxes out @ 17.5psi or 1.15kg/cm2 on the commander.
JD
07-19-06, 10:51 PM
#57
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Just to throw out another data point, I foolishly popped two (two!) motors by running the stock map sensor right at the ragged edge of 1.15. Anyone wanting to run more than 15ish psi in my opinion should buy and install the gm 3 bar map sensor, it's inexpensive and a fairly easy install.
07-19-06, 10:59 PM
#58
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Hello JD.
Alright, so your car made 402RWHP and trapped 125. Stephens (SPOautos) car trapped 125 with a full tank of gas while granny shifting it one single pass... That was with a set up that made 20 less RWHP than the new design. He didn't even lauch the car hard either.
I was filming it at the time he made the pass. We drove in, entered the burn out box, I got out with camera in hand and made one pass. Just one. Not 140 hehehe. He got around to picking me up and we left the premisis.
I am not telling others that your car didn't put down good numbers. Your car is tuned very well and you have more capabilities than the average Joe that doesn't have the knowhow. If you really want more numbers out of twins, I am about to let the cat out of the bag!! Better spool and more powah!
Bryan@BNR
Alright, so your car made 402RWHP and trapped 125. Stephens (SPOautos) car trapped 125 with a full tank of gas while granny shifting it one single pass... That was with a set up that made 20 less RWHP than the new design. He didn't even lauch the car hard either.
I was filming it at the time he made the pass. We drove in, entered the burn out box, I got out with camera in hand and made one pass. Just one. Not 140 hehehe. He got around to picking me up and we left the premisis. I am not telling others that your car didn't put down good numbers. Your car is tuned very well and you have more capabilities than the average Joe that doesn't have the knowhow. If you really want more numbers out of twins, I am about to let the cat out of the bag!! Better spool and more powah!
Bryan@BNR
Last edited by Bryan@BNR; 07-19-06 at 11:09 PM.
07-19-06, 11:00 PM
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Originally Posted by GoodfellaFD3S
funny, in person you're pretty unsassuming and non-confrontational 
.
It's all good man. I was mainly looking for better spoolup/low end in my setup (not more power) and that is why I am switching to dual ball-bearing BNRs. I think that for a pump gas setup I am pretty damn happy with the 5k to 8k rpm powerband and don't think a single will net any more (i say again, at pump gas boost levels of up to 17 psi). It's the 3k to 5k I want to improve.
So once you sell your FD are you still going to hang around and stir up trouble
?
.It's all good man. I was mainly looking for better spoolup/low end in my setup (not more power) and that is why I am switching to dual ball-bearing BNRs. I think that for a pump gas setup I am pretty damn happy with the 5k to 8k rpm powerband and don't think a single will net any more (i say again, at pump gas boost levels of up to 17 psi). It's the 3k to 5k I want to improve.
So once you sell your FD are you still going to hang around and stir up trouble
?How's 482rwh on a T67 @ 17-18psi on pump gas ????
As long as your're happy with your choice of turbo is what matters and good luck with the dual BB BNRs.
JD
07-19-06, 11:05 PM
#60
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Originally Posted by Boostn7
????? 17psi on pump gas on most singles should place you @ ~450+ rwh !!!
How's 482rwh on a T67 @ 17-18psi on pump gas ????
As long as your're happy with your choice of turbo is what matters and good luck with the dual BB BNRs.
JD
How's 482rwh on a T67 @ 17-18psi on pump gas ????
As long as your're happy with your choice of turbo is what matters and good luck with the dual BB BNRs.
JD
Hey JD.
So was going single worth 2 tenths over twins? hehehe just messing with ya.
07-19-06, 11:15 PM
#61
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Originally Posted by Boostn7
????? 17psi on pump gas on most singles should place you @ ~450+ rwh !!!
How's 482rwh on a T67 @ 17-18psi on pump gas ????
As long as your're happy with your choice of turbo is what matters and good luck with the dual BB BNRs.
JD
How's 482rwh on a T67 @ 17-18psi on pump gas ????
As long as your're happy with your choice of turbo is what matters and good luck with the dual BB BNRs.
JD
07-19-06, 11:55 PM
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Originally Posted by Bryan@BNR
Hello JD.
Alright, so your car made 402RWHP and trapped 125. Stephens car trapped 125 with a full tank of gas and granny shifting it one single pass That was with a set up that made 20 less RWHP than the new design. Didn't even lauch the car hard either. I was filming it at the time he made the pass. We drove in, entered the burn out box, I got out with camera in hand and made one pass. Just one. Not 140 hehehe. He got around to picking me up and we left the premisis.
I am not telling others that your car didn't put down good numbers. Your car is tuned very well and you have more capabilities than the average Joe that doesn't have the knowhow. If you really want more numbers out of twins, I am about to let the cat out of the bag!! Better spool and more powah!
Bryan@BNR
Alright, so your car made 402RWHP and trapped 125. Stephens car trapped 125 with a full tank of gas and granny shifting it one single pass That was with a set up that made 20 less RWHP than the new design. Didn't even lauch the car hard either.
I was filming it at the time he made the pass. We drove in, entered the burn out box, I got out with camera in hand and made one pass. Just one. Not 140 hehehe. He got around to picking me up and we left the premisis. I am not telling others that your car didn't put down good numbers. Your car is tuned very well and you have more capabilities than the average Joe that doesn't have the knowhow. If you really want more numbers out of twins, I am about to let the cat out of the bag!! Better spool and more powah!
Bryan@BNR
I told you then that ~430 rwh would be the limit on the BNRs so I hope you prove me wrong this time around.
You have put alot of effort into improving these twin-turbos so I hope your ideas come thru.
Later,
JD
07-20-06, 12:01 AM
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Originally Posted by Bryan@BNR
Hey JD.
So was going single worth 2 tenths over twins? hehehe just messing with ya.
So was going single worth 2 tenths over twins? hehehe just messing with ya.
You know how it goes......more power less traction :-)
07-20-06, 12:18 AM
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Originally Posted by GoodfellaFD3S
That's some pretty good power out of that T67, damn. might be the most I have heard of on 93 octane. Are you running water injection at that boost level? What kinda traps are you seeing out of that? most impressive peak power, big kudos to you. I assume lots of tuning went into that. I have driven a few T67 cars and while they were pretty laggy, once the boost hit the car moved. If going back to sequential wasn't such a pain in the ***, I would consider running the dual bb BNRs sequentially, I think that would be the ultimate street setup.....
No water injection.
Lately been running a T70 @ 20psi which has seen 130.8mph on pump gas.....~500rwh or very close.
The only issue with the seq system is keeping up with a faster revving motor after 15psi.
JD
08-21-06, 04:10 PM
#67
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Originally Posted by GoodfellaFD3S
Just to throw out another data point, I foolishly popped two (two!) motors by running the stock map sensor right at the ragged edge of 1.15. Anyone wanting to run more than 15ish psi in my opinion should buy and install the gm 3 bar map sensor, it's inexpensive and a fairly easy install.
so ya'll are running the gm map sensor on the fc....how do you set that up on the fc....also where can i get another actuator....mine is gone...air passes right through
08-21-06, 10:32 PM
#68
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Originally Posted by 7passu
so ya'll are running the gm map sensor on the fc....how do you set that up on the fc....also where can i get another actuator....mine is gone...air passes right through
which actuator are you referring to? wastegate/precontrol? Never heard of one failing, I am sure if you post in the 'fs section' there are many floating around out there.
08-21-06, 11:19 PM
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Originally Posted by Boostn7
Nah, there's been others that have been higher on pump, I believe.
100 pump gas I believe
08-21-06, 11:51 PM
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Originally Posted by Boostn7
How many guys have purchased the Efini twins thinking of them as an upgrade to the S6 twins because they were rated @ 280hp ???
Or maybe they bought them because they are cheaper than buying new stock ones :-)
08-22-06, 12:06 AM
#71
don't mind me, just popping in to be pedantic....
efini ended in 97.
upgraded turbos started in dec 98.
let's get the terminology straight before the kids start crying about the 'fake efini turbos' they bought on ebay
efini ended in 97.
upgraded turbos started in dec 98.
let's get the terminology straight before the kids start crying about the 'fake efini turbos' they bought on ebay
08-22-06, 01:03 AM
#73
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GOodFellaFD3S damn 11,275 posts..
yeah i think he might know alittle bit about what he is talking about. lol
i liked reading this disscussion but when it comes time to buy a new setup for my car i think i'll go with the BNR with the Ball Bearings. it just seems like a great choice for a street car. i'm not looking for a 500-600whp super FD just enough to woop up on 90% of the cars in my area.
yeah i think he might know alittle bit about what he is talking about. lol
i liked reading this disscussion but when it comes time to buy a new setup for my car i think i'll go with the BNR with the Ball Bearings. it just seems like a great choice for a street car. i'm not looking for a 500-600whp super FD just enough to woop up on 90% of the cars in my area.
08-22-06, 01:17 AM
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if I had it to do over again I'd probably look at half bridge with a single turbo, but there may be some downsides to reliability and gas mileage (of course it stinks anyway), who knows
