All Things Mk5 > Performance Modifications

The octane booster topic

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Shoduchi:
I went to test the octane booster today. I added about 4 ml of it for each liter of petrol, BP Ultimate 98 RON.

It measured 335,5 CV, so about +5 CV compared to last year in January, at around 13ºC of ambient temp and 27ºC of intake temp.

The only graph I got today by mistake was from when I went to get the DSG tuned last July (more clamping pressure, faster shifting, no kick down on Manual mode, no auto upshift on Manual mode after hiting the rev limiter, rev limit to 7.000 rpm). Weirdly it made more power than what it measured in January. :confused:

The tuner will send me the correct graph later or I'll get it when I return there after fitting the VWR intake and GFB engine pulley. :smiley:

AJP:

--- Quote from: Shoduchi on December 13, 2016, 11:27:30 pm ---I went to test the octane booster today. I added about 4 ml of it for each litre of petrol, BP Ultimate 98 RON.

It measured 335,5 CV, so about +5 CV compared to last year in January, at around 13ºC of ambient temp and 27ºC of intake temp.

The only graph I got today by mistake was from when I went to get the DSG tuned last July (more clamping pressure, faster shifting, no kick down on Manual mode, no auto upshift on Manual mode after hiting the rev limiter, rev limit to 7.000 rpm). Weirdly it made more power than what it measured in January. :confused:

The tuner will send me the correct graph later or I'll get it when I return there after fitting the VWR intake and GFB engine pulley. :smiley:



--- End quote ---
Did it actually feel any stronger with the octane booster?

Shoduchi:
Nothing really noticeable on my but dyno, unfortunately.  :sad1:

The boost control worked better today,  so the torque spike was smaller. Other than that, on today's dyno the line was just marginally higher.

On my next test I'll up the dosage to 5 ml per liter, the maximum recommended.

AJP:

--- Quote from: Shoduchi on December 14, 2016, 01:00:34 am ---Nothing really noticeable on my but dyno, unfortunately.  :sad1:

The boost control worked better today,  so the torque spike was smaller. Other than that, on today's dyno the line was just marginally higher.

On my next test I'll up the dosage to 5 ml per liter, the maximum recommended.

--- End quote ---
I doubt 1ml extra would equate to any tangible difference if 4ml per litre doesn't. But I'll look forward to your findings all the same.

The science behind it seems good; there should be some benefit. Whether that simply means you get better knock protection rather than a proven increase in power across the revs, I'd imagine for certain cars with certain harware and map configurations this could be useful.

Shoduchi:
Indeed mine is mapped very classically, AFAIK. It makes 1,5 bar of peak boost and 1,4 bar of stable boost. So I really don't know what's the best output with 1,4 bar of boost to compare with. I've seen lots of examples of Stage 2+ Ed. 30 making more boost to reach ~370 BHP. When I get the intake fitted mine will have the full Stage 2+ hardware setup. :thinking:

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