Tiguan IS38 and Big turbo upgrades

[Nyer]

Lol, no Tigger. I’m going to buy an Audi. Head over heals in love with the 2.5TSFI, just haven’t decided on a second hand low klms RS3 or wait for an RSQ3.

Absolutely love my Tig but getting the performance I want as a daily driver is costly, and then it becomes a car that I have to keep because it’s very difficult to sell modified late model cars.
Instead I will start with a platform that has 400 odd horses to begin with, stage 1 tune, IC upgrade and intake, a DSG tune and an E85 map for when I’m feeling like a total ratbag.
Either way I’m shelling out more coin, but I just can’t seem to remove my but from my mates RS3. It’s note is exactly what I want to hear and although the stock RS is a bit laggy the stage 1 tune definitely flicks that.

Second hand low Klm RS3’s are overpriced massively at present but once the new model is closer to being released I reckon I can find a good deal on one. Best to get ready for that, fortunately I’m in no hurry and may have some waiting to do to find the right price but that’s all good.

I'm very tempted, where on the Gold coast are you? I'm at Oxenford. Can you elaborate on this? What's costly? "but getting the performance I want as a daily driver is costly"

[REXman]

Pretty straight forward. The guy wants to go faster.. and to do so, would be at much higher extra cost above the base Tiguan car than the comparative extra cost on a base RS3.

Obviously the base RS3 costs more than a base Tiguan, but $4k on an RS3 would get you a very quick car where you would need 10k+ to get that performance on a Tiguan. Then it still wouldn’t handle nor brake as well as the RS3.

Obviously very different cars (SUV VS Sports Hatch) so nothing unexpected.

If you want an SUV the Tiguan is an amazing car especially for the money but if it’s sheer performance you can’t compare it to the likes of RS3 or A45 or M140 etc.. these cars just have the handling and braking and grunt from factory.

The Tiguan is a GTI on stilts with an RS3 gearbox.. so decent - but different league.

Now if you were to drop a 2.5 into the Tiguan and drop it, I would like it even more for so many reasons




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[Wolfsburger]

I'm very tempted, where on the Gold coast are you? I'm at Oxenford. Can you elaborate on this? What's costly? "but getting the performance I want as a daily driver is costly"

As explained by Rexman. My need for an SUV is no longer a must, due to a second vehicle. To get my Tig to the acceleration times I originally planned is around 10k. I love hard acceleration, fast, affordable daily drivers and enjoy the odd trip to quarter mile street meets. With the tune my car has now and the current hardware, at best would see a mid to high 13 second pass. To dip into the 12’s would cost another 10k.

I can get out of my car and into an RS3, slightly modify it and have an 11 second daily driver. Yeh will do some coin, always do with cars but if I’m ever going to own an RS, the coming months will be the best time to do it.

The Tig is a very nice SUV, spend some coin on it and they become very quick SUV’s and will surprise the hell out of a lot of performance cars.

But the 2.5TSFI is another beast, and now that I don’t need to have an SUV, I’m going to go after one.

[Wolfsburger]

Pretty straight forward. The guy wants to go faster.. and to do so, would be at much higher extra cost above the base Tiguan car than the comparative extra cost on a base RS3.

Obviously the base RS3 costs more than a base Tiguan, but $4k on an RS3 would get you a very quick car where you would need 10k+ to get that performance on a Tiguan. Then it still wouldn’t handle nor brake as well as the RS3.

Obviously very different cars (SUV VS Sports Hatch) so nothing unexpected.

If you want an SUV the Tiguan is an amazing car especially for the money but if it’s sheer performance you can’t compare it to the likes of RS3 or A45 or M140 etc.. these cars just have the handling and braking and grunt from factory.

The Tiguan is a GTI on stilts with an RS3 gearbox.. so decent - but different league.

Now if you were to drop a 2.5 into the Tiguan and drop it, I would like it even more for so many reasons




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I got an afternoon of driving an FL AMG A45 a few weeks back, which kicked off the new desire. Nice car with low klms, zero mods and they were bending over backwards to offload it. Well under 60k. Quick little machine, but it felt a bit too boy racer for me. Torquey engine, seriously fun to drive but the note is one that you either like or you don’t. They also don’t lend themselves to mods as good as the RS3, I suspect there isn’t the headroom in that motor, searches on mods were fairly limited unless you were laying over a lot of coin.

The new 300kw Mercs are pretty insane but still over budget, as you would have seen there are plenty of RS3’s for sale, mostly all overpriced but that will have to change in the relative short term with the new models coming if they want to sell them. A dealer car dropped its price 8k over the phone, finding the right one with cash should see a good buy.

Time will tell 👍

[INASNT]

I got an afternoon of driving an FL AMG A45 a few weeks back, which kicked off the new desire. Nice car with low klms, zero mods and they were bending over backwards to offload it. Well under 60k. Quick little machine, but it felt a bit too boy racer for me. Torquey engine, seriously fun to drive but the note is one that you either like or you don’t. They also don’t lend themselves to mods as good as the RS3, I suspect there isn’t the headroom in that motor, searches on mods were fairly limited unless you were laying over a lot of coin.

The new 300kw Mercs are pretty insane but still over budget, as you would have seen there are plenty of RS3’s for sale, mostly all overpriced but that will have to change in the relative short term with the new models coming if they want to sell them. A dealer car dropped its price 8k over the phone, finding the right one with cash should see a good buy.

Time will tell ��

Once the new A and CLA 45 AMG S are out the market will be flooded with the previous generation as it a much better car overall, not just a facelift... i recon there will be alot traded in

[tigger73]

Once the new A and CLA 45 AMG S are out the market will be flooded with the previous generation as it a much better car overall, not just a facelift... i recon there will be alot traded in

A lot of the original CLA 45 owners traded their cars within 6 months as they were too hard to live with on a daily basis. They don't have an "off" button where you can just trundle around in relative comfort. The suspension was hard or harder and when you wanted it quiet you got crackles and pops every gear change.

[Nyer]

I am seriously considering the stage 3 Apr with the IS38 but then noticed that torque comes on so much later than the tuned IS20. See torque curve below. One thing I really miss from my old Tucson 2.0 diesel, was that you could just put your foot down and the engine would surge with a nice amount of torque without needing to changing gears. It was just a nice amount of instant torque on tap. Great for City driving!

To get the Tiguan moving, it hesitates to drop a gear or two to accelerate...

Has anyone get real world experience in the tuned IS20 VS IS38? I'm guessing the later torque delivery is because the IS38 is bigger.

[REXman]

Yeah take the graphs with a grain of salt. They’re helpful, but I don’t trust companies advertising as much as I want to.

The IS20 spoils up much harder/quicker.

I had an IS20 with a bluefin and when I floored it the traction light would come on.

No such excitement with the IS38, but I am getting the car retuned in about 2 weeks so I’ll report back.

The IS38 does make nicer power in the mid to high range though and really hunts above 70km/h.

When I get my car back I’ll tell you if you’re best going with stg2+ (tune and some basic bolt on mods) or stg 3 (bigger turbo etc as I have done). Right now, although better top end, it not so good that I’m still missing the franticness of the bottom end.


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[tigger73]

I am seriously considering the stage 3 Apr with the IS38 but then noticed that torque comes on so much later than the tuned IS20. See torque curve below. One thing I really miss from my old Tucson 2.0 diesel, was that you could just put your foot down and the engine would surge with a nice amount of torque without needing to changing gears. It was just a nice amount of instant torque on tap. Great for City driving!

To get the Tiguan moving, it hesitates to drop a gear or two to accelerate...

Has anyone get real world experience in the tuned IS20 VS IS38? I'm guessing the later torque delivery is because the IS38 is bigger.

This is the major trade-off with smaller vs. bigger turbos on a daily driven car. Smaller turbos spool quicker but run out of puff whereas the bigger turbo takes a bit longer to spool but pulls harder. There's not right or wrong. It's all down to personal preference and generally on a daily driver you don't want to go too big as driveability can suffer.

Second point is if you look at the absolute numbers the IS38 makes the same torque as the IS20 at ~200rpm later in the lower rev range. It's a bit of lag which is noticeable but not a massive amount. Compare that to the curve at higher rpms and the IS38 holds on for a LOT longer. Like close to another 1,000rpm at peak torque. IS20 starts tailing off at 4,000rpm whereas IS38 hold on until 5,000rpm. This is where you really start to notice it when you're doing longer WOT runs.

Finally remember it's hard to compare a TDI vs. TSI in terms of torque. The TDI is going to have torque on tap from low RPM's whereas the petrol engines need to get pushed (and drop a gear or 2) to get the most out of them.

[Nyer]

I'd normally agree about charts, but I'm hoping APR are a trustworthy company and showing it as it is. Besides, it shows worse early performance for stage iii than stage ii, so it's not like they're overselling it.

Who did your IS38 tune? So you have a 0-100 time for the stage ii?