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You should call the new one....
Muffy the Backpressure Slayer... In case it didn't reach down unda here's the reference: https://en.m.wikipedia.org/wiki/Buff..._Slayer_(film) Nice work :) |
Originally Posted by slash128
(Post 4744371)
You should call the new one....
Muffy the Backpressure Slayer... Nice work :) Was wondering how long it would be before some picked up on that . |
Went for a drive last night via all the underpasses in town ...hehe
Loving the sound ! |
Well,
Now all you have to do is make a replica of your manifold, a more in depth description/picture etc of the sleeve mod, and ship it all to me. :) Travis |
That's not going to happen ...... unless of course you pay me ................
https://www.bing.com/videos/search?q...AF&FORM=VRDGAR |
Dyno is booked .................. E50 or pump gas ?
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Originally Posted by Brettus
(Post 4744722)
Dyno is booked .................. E50 or pump gas ?
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Both 2 dyno days
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Bee tee dubs love the hashtags!
#Allhailtherenesis #Longlivetherenesis |
:squint:
Originally Posted by slash128
(Post 4744773)
Bee tee dubs love the hashtags!
#Allhailtherenesis #Longlivetherenesis |
^ Bee tee dubs= By the Way
He's referring to Brett's sig |
Originally Posted by slash128
(Post 4744734)
I say go for what you are tuned for now. If you change you'll likely need to spend some time dialing it in. I have found it's not just scale the injectors and go but there is a bit to be gained playing with leaner AFR and timing...
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Sounds like a plan... Doing both will give you a good comparison :)
Once I get my clutch sorted I plan on another dyno on E50... |
New muffler vs 1st attempt . Getting rid of the tight rad. has paid dividends :
New: https://cimg0.ibsrv.net/gimg/www.rx8...41657d4d51.jpg https://cimg6.ibsrv.net/gimg/www.rx8...4b124aeebf.jpg |
Nice man, it looks very functional.
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Originally Posted by Brettus
(Post 4744838)
It's 3 weeks away so have plenty of time to dial in an E50 tune . I was just thinking about what is relevant to the forum . Perhaps stick to pump gas for now then look into E50 dyno another time.
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Finally brought it up to 16psi (on E15)
Torque hovering at 300lb/ft Rear scroll backpressure is up to 27.5psi @ 8000rpm https://cimg6.ibsrv.net/gimg/www.rx8...7206b27bd2.jpg |
Looking real good!!! Can't wait to see official dyno :)
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I have been hovering this thread for a while and I am so excited to see the results of this! It looks so promising!
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Swapped the pressure guage over to front scroll today .................
Original exhaust @12.5psi .................Front scroll ..........rear scroll.......... 3000..................5........................4.. ........... 4000.................11.......................9... ............ 5000.................14......................13... ........... 6000.................18......................17... .......... 7000.................24......................22... .......... 8000.................30......................27... ................ New exhaust @16psi 3000.................4.........................4 4000.................11.......................9 5000.................16......................15 6000.................19......................18.5 7000.................24......................23.5 8000.................29......................27.5 Looks like the difference between scrolls is less at higher flows as i had hoped. |
Must say I'm surprised by how high back pressure are. I dont know why, but I had guessed it would have been lower. Kind of makes sense with quite a lot pressure when 40-60Hp is required to drive the compressor.
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Originally Posted by AAaF
(Post 4745922)
Must say I'm surprised by how high back pressure are. I dont know why, but I had guessed it would have been lower. Kind of makes sense with quite a lot pressure when 40-60Hp is required to drive the compressor.
Corky Bell has this to say about it : It is this writer's opinion that a good street turbo system will show the ratio of TIP to IMP t.o be approximntely 2. If a ratio of greater than 2 exists, the turbo is too small and is choking the system down and not permitting much power gain. If the ratio is less than 2, often the boost theshold will be higher than desireable for commuter Car use. This situation is offset by t.he fact that as the ratio comes down power goes up. |
Forgive my lack of knowledge here, but to clarify "TIP to IMP" = Turbo Inlet Pressure/Intake Manifold Pressure or ...?
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Originally Posted by slash128
(Post 4746081)
Forgive my lack of knowledge here, but to clarify "TIP to IMP" = Turbo Inlet Pressure/Intake Manifold Pressure or ...?
IMP= Intake manifold pressure TIP is not just telling if turbo is right size but also if your entire system is ok .This is why I've been comparing mine against the matchbot numbers . Even though mine is not a BW turbine , I've been able to match it up with one on their chaarts and see where the other weaknesses are on my setup. Would be great if you could look at yours for comparison :) |
Originally Posted by Brettus
(Post 4746083)
TIP=turbine inlet pressure
IMP= Intake manifold pressure Kidding, thanks for clarifying :) |
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