Tiguan IS38 and Big turbo upgrades

[tigger73]

So curiousoty got the better of me

You know what they said about curiosity and cats...

I have a TVS TCU tune with launch control set at 4500 RPM. TVS did say that this will put greater strain on the driveline

Ramee and Guy tested the limits of the Gen1 drivetrain and now Melbourne_Tiggy is doing it for the Gen2 team...

so I might just do a few runs then go back to the 4000 rpm launch setting. I suspect this won’t improve the 4.1s 0-100 time, and will result in greater wheel spin (I was already spinning at 4000 rpm launch). But let’s see what happens in real world testing......

Maybe need some better tyres than the stockies...

[Melbourne_Tiggy]

You know what they said about curiosity and cats...



Ramee and Guy tested the limits of the Gen1 drivetrain and now Melbourne_Tiggy is doing it for the Gen2 team...



Maybe need some better tyres than the stockies...

I have yet to see an IS38 Tiguan with a 4500 RPM LC, even our Russian comrades haven’t set it that high..........probably because it might break something. Although on a few highly tuned Golf Rs I have seen this work, noting they are running upgraded suspension, mounts, wheels and tyres.

I have on the development plan, upgraded tyres to Michelin Pilot Sport 4s. I was thinking of changing to lighter wheels, but I do love the stock Suzuka’s and it does give the car it’s unassuming “sleeper” look. I might borrow a light wheel set with MPS4 or racing slicks in the future and see whether this has an affect on vbox times. One hypothesis at a time........

[tigger73]

I have yet to see an IS38 Tiguan with a 4500 RPM LC, even our Russian comrades haven’t set it that high..........probably because it might break something. Although on a few highly tuned Golf Rs I have seen this work, noting they are running upgraded suspension, mounts, wheels and tyres.

I have on the development plan, upgraded tyres to Michelin Pilot Sport 4s. I was thinking of changing to lighter wheels, but I do love the stock Suzuka’s and it does give the car it’s unassuming “sleeper” look. I might borrow a light wheel set with MPS4 or racing slicks in the future and see whether this has an affect on vbox times. One hypothesis at a time........

Definitely a set of grippier tyres will help with the time, but these will also cause higher stresses. The stock tyres slipping is probably a good thing in terms of preserving your drivetrain.

But either way I'm interested in the outcome of your experiment. I'm guessing the lure of a 3.99s 0-100 is tantalising....

[Hole46]

My drivetrain is evil, it must be punished!


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[Melbourne_Tiggy]

Definitely a set of grippier tyres will help with the time, but these will also cause higher stresses. The stock tyres slipping is probably a good thing in terms of preserving your drivetrain.

But either way I'm interested in the outcome of your experiment. I'm guessing the lure of a 3.99s 0-100 is tantalising....

Yeap, something needs to take the brute force.....tyres are probably cheaper to replace than my transfer box (I read what happed to Ramee, that was very unfortunate). I’m hoping this iteration of the DQ500 for MQB is stronger and can hold up to more torque punishment.

So close to dipping into the 3s, yet so far. I’m not desperate enough (yet) to start doing weight reduction with passenger and rear seats, spare tyre and child seat removal......

[Melbourne_Tiggy]

My drivetrain is evil, it must be punished!


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I think a 7000rpm LC is in order.....that would give your drivetrain some harsh punishment!!!!

[tigger73]

Yeap, something needs to take the brute force.....tyres are probably cheaper to replace than my transfer box (I read what happed to Ramee, that was very unfortunate). I’m hoping this iteration of the DQ500 for MQB is stronger and can hold up to more torque punishment.

So close to dipping into the 3s, yet so far. I’m not desperate enough (yet) to start doing weight reduction with passenger and rear seats, spare tyre and child seat removal......

DQ500 isn’t the issue it was as you say the transfer case that broke. Both Guy and Ramee had failures.

Hopefully in MQB this is beefed up but given there’s no issues at stock power levels they may not see the necessity.


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[Dose Pipe Sutututu]

You hope it's beefed up, considering there's a 2.5 ton towing capacity

[Melbourne_Tiggy]

That’s the thing with going down this modification path, you do some research to understand the limits and lessons from others. But if you are amongst the early adopters, you take on risks that a number of things could fail. It’s also good to roll your sleeves up and/or have mates who are mechanics, just in case something fails.

But, you know what, it’s highly rewarding (when mods works out), exciting, and very satisfying to “surprise” those who just see it as a family people mover.

[Wolfsburger]

That’s the thing with going down this modification path, you do some research to understand the limits and lessons from others. But if you are amongst the early adopters, you take on risks that a number of things could fail. It’s also good to roll your sleeves up and/or have mates who are mechanics, just in case something fails.

But, you know what, it’s highly rewarding (when mods works out), exciting, and very satisfying to “surprise” those who just see it as a family people mover.

Very true, surprise factor is awesome. As we all know, if your going to increase grip and HP a weak link will be found somewhere in the drive train. Learned a lot of hard lessons in the early days of WRX mods. Weak link was always the clutch, then you would eliminate that with a brass button jobbie. The next HP bug would bite and you would simply transfer the stress onto the next weak link. Gearbox, CV’s etc, they were expensive lessons however Japanese cars were a long way behind in comparison to today’s Euro.

With my Tig, once I can get mid to low 4 second 0-100 times and 12 second quarters it will be bottled up. Your always going to lose driveability and reliability the further you push, it’s so bloody easy to fall into the HP bug. Good thing is we can all decide how far to go before your happy......in my experience your never happy lol and always want that bit more. Knowing when to quit is personal. 👍