Mugen TwinLoop and Mugen B pipe Vs. OEM b-pipe & SPOON Street muffler (Zens Retune)
recently Zen on the forum (with new tegiwa manifold) came tto me for some service work, to fit a Spoon Street muffler, oem b-pipe and dyno-test/retune (which took 2 hours to perfect with these mods since his remap).
Once the Mugen TL muffler and b-pipe was replaced with a Spoon street and oem b-pipe, a baseline dyno test was performed after bringing the engine and gearbox upto temperature.
The Dashed line is Zen's previous final dyno test after tuning a couple of weeks ago.
Initially it was apparent this change had made the car lose some power across the board in itts currentt state of tune.
of course anything that affects airflow on an engine will affect the requirements for the fuel map and ignition map
After aproximately two hours re-tuning the fuel maps and reworking the ignition tables the car was tuned. Not quite making he same power the twinloop system could, but the final results were not far off! Very good considering tthe sttock b-pipe. the Spoon Street muffler certainly perform well without being excessively loud.
This is the Final runed graph of the Spoon Street and OEM b-pipe vs. the previous ttune with Mugen TL muffler and b-pipe
This is a graph showing the tuned vs. untuned with just tthe b-pipe and the muffler beign changed
And one more just for giggles. Zens' final tune with Spoon Street vs. 'Lee S' car which has the mugen TL and b-pipe system but with different intake.
Zen has the ITG intake and Lee has the Whale Tail.
Zen Has the Tegiwa manifold and Lee has a DC Sports manifold.
Specs are pretty similar apart from the above so its an interesting comparison with some useful conclusions.
Hope this has been informative!
Will @ RDT (EK9turbo)
recently Zen on the forum (with new tegiwa manifold) came tto me for some service work, to fit a Spoon Street muffler, oem b-pipe and dyno-test/retune (which took 2 hours to perfect with these mods since his remap).
Once the Mugen TL muffler and b-pipe was replaced with a Spoon street and oem b-pipe, a baseline dyno test was performed after bringing the engine and gearbox upto temperature.
The Dashed line is Zen's previous final dyno test after tuning a couple of weeks ago.
Initially it was apparent this change had made the car lose some power across the board in itts currentt state of tune.
of course anything that affects airflow on an engine will affect the requirements for the fuel map and ignition map
After aproximately two hours re-tuning the fuel maps and reworking the ignition tables the car was tuned. Not quite making he same power the twinloop system could, but the final results were not far off! Very good considering tthe sttock b-pipe. the Spoon Street muffler certainly perform well without being excessively loud.
This is the Final runed graph of the Spoon Street and OEM b-pipe vs. the previous ttune with Mugen TL muffler and b-pipe
This is a graph showing the tuned vs. untuned with just tthe b-pipe and the muffler beign changed
And one more just for giggles. Zens' final tune with Spoon Street vs. 'Lee S' car which has the mugen TL and b-pipe system but with different intake.
Zen has the ITG intake and Lee has the Whale Tail.
Zen Has the Tegiwa manifold and Lee has a DC Sports manifold.
Specs are pretty similar apart from the above so its an interesting comparison with some useful conclusions.
Hope this has been informative!
Will @ RDT (EK9turbo)
