MK5 Golf GTI
All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: LuisGTI on December 17, 2020, 01:29:11 am
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Hello all, like the title says, I did a stage 2+ and I'm happy with the results except with the boost pressure...
Hardware:
3" Ramair Intake
3" Downpipe
Loba HPFP upgrade
Forge PCV fix
Forge DV
294hp 458nm max boost 1.45-1.5
BUT
1.4 @ 5000
1.1 @ 6000
0.9 @ 6500
0.85 @ 7000
And here's the graph... (before and after hpfp upgrade)
(https://i.gyazo.com/d8e33adfb3a61848bb349a197ed3dfae.png)
What's your thoughts on the tune? Like I said I'm worried about that 0.85 at revlimit although it's 0.9-1 at 6500 when I upshift
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Looks a little optimistic to me
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Looks like some great gains in drivability from the hpfp / new mapping.
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Looks a little optimistic to me
I thought the same. ED30s make around 300hp from 1.4 bar, so I can't see a K03 making the same.
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What's your thoughts on the tune? Like I said I'm worried about that 0.85 at revlimit although it's 0.9-1 at 6500 when I upshift
Is it DSG?
You will get a boost spike after a gear change. That's normal.
It's a tiny turbo. That is a typical K03 plot.
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What's your thoughts on the tune? Like I said I'm worried about that 0.85 at revlimit although it's 0.9-1 at 6500 when I upshift
Is it DSG?
You will get a boost spike after a gear change. That's normal.
It's a tiny turbo. That is a typical K03 plot.
It's manual
The chiptuner said that his stage 2+ is 1.6 and 1.1 at revlimit but my turbo can't handle it, it just goes down, maybe the wastegate is defective?
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OK, that confirms the spike then as manuals do spike more than DSG due to the bigger rev drop between gears.
ECU remaps may command certain boost levels, ignition advance and fuel pressures but at the end of the day, hardware faults and/or the ECU's component protection routines may not allow the requests to be achieved.
If you're not achieving the target boost, check the hardware. Boost leaks, leaking dump valves, worn out or loose wastegate penny valve, incorrect wastegate tension, worn turbo, worn VVT, worn or broken engine (weak compression), incorrectly timed engine, clutch slip....the list goes on.
Software suppliers will always give you a blanket "It's your hardware" response to any kind of complaint I'm afraid, so it's time to verify that before going back to them.