Mk2 Tiguan Tuning

[INASNT]

Yeah I don't mean to sound like I'm questioning or that I'm stupid. My tuner just asked about your 180kw. As I've got 155kw at the wheels on stage 2. I've done R600 Intake, Scorpion Downpipe IKH24 Plugs and DSG Tune. Have you done anything else like HPFP etc? He pushed for more but started to pick up knock so he said he didn't want to push it any further. Fiddle with timing, fuelling and boost but still pulled a bit of timing.

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Hmm thats weird as my stage 1 was 165@4 wheels. The dyno i used is conservative, seen it read lower numbers than others on the same car..

Who turned your car? Got graphs of your a/f ratios, boost or anything else?

[twyat1]

Hmm thats weird as my stage 1 was 165@4 wheels. The dyno i used is conservative, seen it read lower numbers than others on the same car..

Who turned your car? Got graphs of your a/f ratios, boost or anything else?

This is all I have at the moment. I can ask for AFR and Boost Graphs. Redline Tuning, a local tuner up here in QLD.

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[INASNT]

Have they tuned many VWs before GTI, R?

They are missing something in their tune. Another tig stage 2 got similar numbers to mine on same tune and dyno.

I want to see an APR stage 2 tig on the same dyno

[twyat1]

Have they tuned many VWs before GTI, R?

They are missing something in their tune. Another tig stage 2 got similar numbers to mine on same tune and dyno.

I want to see an APR stage 2 tig on the same dyno

Yeah there are plenty of them running their tune. I've been in a few of their customer's before deciding to get with them. Spent quite a bit of time on the dyno.

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[twyat1]

Lambda at WOT is 0.82 and achieving ~12.3 AFR

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[tigger73]

Did a few base runs, best was a 130.3kw. Very similar to Inasnt.

150kwaw for stage 2 sounds a bit low given your stock was 130kwaw.

For a reference my gen1 155TSI made 120kwaw stock and 144kwaw stage 1 and previous stage 2 125TSI Tig was 152kwaw all run on the same dyno.

[INASNT]

Top of my head possible problems..

How many kms you got? Tight engine that needs more time to run it..

98 octane in the tank or bad batch of fuel meaning you could not run the right ignition timing / boost?

A dyno setting like ambient temperature was set wrong and too low but if you got stock and stage 2 done back to back cant be problem.

Blockage in downpipe or exhaust after downpipe install.

Dyno run in 4th gear? 4th is the closest 1:1 ratio gear

[tigger73]

A stage 1 tune should have you back to the "nominal" kW output from your engine at the wheels - i.e. 162kwaw for stage 1 give or take.

Stage 2 should bump this by around 10-20kwaw depending on other mods (intake, intercooler, fuel pump, etc).

[Dose Pipe Sutututu]

Stage 2 should bump this by around 10-20kwaw depending on other mods (intake, intercooler, fuel pump, etc).

A fuel pump does not make power, it just allows more fuel to be supplied in order to reach the desired AFRs, breathing modifications will make power as well as allow head room for more power to be made with more timing and boost.

Also a leaner AFR will make more power, so hypothetically a car with lacking fuel pressure or an under performing HPFP will actually make more power (which can be unsafe, higher EGTs, higher cylinder pressure, higher chance of knock/detonation)

[tigger73]

A fuel pump does not make power, it just allows more fuel to be supplied in order to reach the desired AFRs, breathing modifications will make power as well as allow head room for more power to be made with more timing and boost.

Yes agree 100%. It just depends what the limiting factor is that’s stopping you from adding more fuel/air. And most tuners will want to do this with some safety margin for bad batch of fuel, elevation changes, ambient temps, etc, etc.