Polo GTI APR ECU Upgrade

[Guy_H]

If yours is a 03/2011 build, yours is the later fuel system, so you are fine!

If you understand about how a plate diff works compared to a Torque biasing diff (and you ever go to a race circuit), then the only thing that would stop you using a plate diff is the price.

TBD have their place, but on the race circuit they fall very short in being able to put the power down - and the release the diff has in mid corner / exit is about a 1/2 - to a second a lap in our experience. TBD is a good priced alternative for the street mind you .

Don't have any HP numbers in mind yet, its all experimental at this stage. Once we get the compressor maps of the new hybrid, we should have some expectations, but the dyno & calibration will see if there are any other components that need upgrading!

We are already over 200whp now on 98 ron with the "stage 2" setup.

[vRSy]

Is that your car in the UK VW Driver magazine? Just saw the front cover which said 270Hp big turbo? Going to pick it up in a bit

[Guy_H]

Thats the one!

[vRSy]

Is there a build thread about at all?

[Guy_H]

No, but I'm working on collating some stuff!

[Guy_H]

There are some pics of the latest revision of the Polo intercooler on our facebook page. We have come up with a new revision that is a direct bolt in, no cut option now with a stepped core final flow & pressure drop testing over the next two weeks & if all OK, December release.

6R Polo GTI Intercooler Development Progress | Facebook

[vRSy]

When are you looking to release the Hybrid option and software?

Im liking the APR cooler, judging by ETKA, the Polo and Fabia share the same std intercooler, so it should be a direct fit. (The Ibiza cupra has a different cooler). What differences have you seen in the IAT on WOT etc. and how is it coping with the raised output of the Hybrid.

One thing ive noticed with the 1.4TSI is the engine bay gets unbelievably hot compared to any other performance car ive owned. Also the oil temperatures easily get into the high 120 degree region when on track. What heat management options are you looking at?

Hows the hybrid coming along then? Any sneaky peaks at outputs, or power/torque gains though the rpm band, or timed performance differences over when the car was just stage 2?

[Guy_H]

Hybrid is still not on yet, we have made some changes to the machining to make it a better fit on the cold side.

The intercooler - on consecutive dyno runs we see 30 degrees C better temps, so over 12wkw.

The "near to signed off" production intercooler is being flow tested & then we should have it ready.

We have been working hard on comparing our 2.5" & 2.75" exhausts & downpipes at the moment.

[vRSy]

I thought you had already fitted it. That VW driver article stated 270hp big turbo 1.4TSi and mentioned the initial tests showed it was good for 270hp so I presumed you had started the R&D for the mapping. Gutted now lol,

How did you come to the 270hp, was that through flow testing of the turbo?

[Guy_H]

270hp is achievable with a stock turbo

[gavs]

Just following on from vRSy's comment regarding engine temps, I noticed a fair bit of heat wrapping on your car there Guy, has it noticably been able to keep temps in check? I too notice on mine that the oil easily gets up over the 110 degree mark on a spirited drive, how is you little monster running in regards to temps? Hence my main interest in a much bigger intercooler

[VWindahouse]

Hey Guy, are you doing any R&D for cross fitting of the GTI's IC and DP etc. for the 1.2 TSI? From what I've been reading on here and other forums from around the world there seems to be a huge demand.

Cheers!

[Guy_H]

Just following on from vRSy's comment regarding engine temps, I noticed a fair bit of heat wrapping on your car there Guy, has it noticably been able to keep temps in check? I too notice on mine that the oil easily gets up over the 110 degree mark on a spirited drive, how is you little monster running in regards to temps? Hence my main interest in a much bigger intercooler

The #2 prototype on our car runs a different configuration with more sump clearance & different heat shields, so does away with the wrapping on the first prototype - running around hard today (MFD indicated we hit 36 C today), the oil temp was less than what we saw in mid winter (just) - but yes, we have been doing a lot of work on the intercooler / intake & exhausts to minimise that temp increase - TEMP = HP - its easy to make HP by getting those temps down!

---------- Post added at 06:52 PM ---------- Previous post was at 06:51 PM ----------

Hey Guy, are you doing any R&D for cross fitting of the GTI's IC and DP etc. for the 1.2 TSI? From what I've been reading on here and other forums from around the world there seems to be a huge demand.

Cheers!

Unfortunately we haven't done anything (apart from investigate the ECU) on the 1.2 TSi as of yet. We might have to revisit it shortly. APR's new office just opened in the UK, so the demand might prompt some more development from over there!

[vRSy]

270hp is achievable with a stock turbo

Cant see it personally, not on an accurate dyno anyway. The UK tuning scene (and our weather is alot cooler than you guys) has stage 2 guys hitting 210-220hp on good dynos, and 230hp on generous dynos but we all suffer heat soak. With a good heat management setup im sure we could add a nice chunk of power but not an extra 40-50hp. Not reliably and consistently anyway which is what matters.

Looking at your performance times of your Polo on the FWD tuner challenge (which was awesome BTW), it is on par with what our cars in the UK have performed at the 1/4 mile and 0-60 sprint events.

[Guy_H]

The biggest unlock in HP is the intercooler & intake - massive differences.