Tiguan IS38 and Big turbo upgrades

**INASNT** · 30-01-2019, 10:43 AM

Originally Posted by tigger73

100% agree with what you've said. There's a lot of good reasons to go stock IS38 including ease of finding a replacement if ever required.

I guess what I wrote was my reasoning behind going down the path that I have. Agree 100% that the IS38 is tried and tested and that if you want a known quantity then this is a very good option. Plus 0-100 in 4.1sec is nothing to be sneezed at.

I get the argument that going for a "mild" hybrid IS38 doesn't make a heap of sense in terms of $/kw, however if you don't want to rebuild an engine then this is about the limit of the stock internals. The next step up from here is where there's significant costs, bigger turbos and laggier response.

It's a tricky one as an IS38 is such a relatively cheap upgrade compared to a hybrid turbo. Don't worry I tossed up going IS38 many times before biting the bullet and saying TTE475 or nothing!

To max out the stock internals requires a small hybrid turbo and these things are 2-3 x price of a stock IS38. It's just production volumes that dictate the price. The factories are pumping out 1,000's if IS38's compared to 10's of hybrids.

I know I'm paying a premium for it but hopefully I'll be happy knowing the next step up was going to be another $10k and I was never going to do it.

Are you sending your stock in to be modified?

Had a previous car where boost only started to build at 4000rpm, was a pig to drive as a daily.

**tigger73** · 30-01-2019, 12:16 PM

Originally Posted by INASNT

Are you sending your stock in to be modified?

Had a previous car where boost only started to build at 4000rpm, was a pig to drive as a daily.

No I’ll be keeping my stock IS20 turbo and getting a hybrid IS38 (TTE475).

I’ve done a fair bit of research and going too large a turbo on a road car never ends well.

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**twyat1** · 31-01-2019, 01:51 PM

Turbo swap and Intercooler booked for 11/02.

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**Melbourne_Tiggy** · 31-01-2019, 03:33 PM

Originally Posted by twyat1

Turbo swap and Intercooler booked for 11/02.

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Exciting mate, which tuner and turbo you going with? I’ll update the front page, QLD based?

**twyat1** · 31-01-2019, 04:33 PM

Originally Posted by Melbourne_Tiggy

Exciting mate, which tuner and turbo you going with? I’ll update the front page, QLD based?

**Melbourne_Tiggy** · 01-02-2019, 06:33 AM

Originally Posted by twyat1

Mate that is quite the setup. Congrats and well done!!

I had a quick peek online and noticed these can put down 460+ HP. You will be getting quite a lot of flow with the HPFP. It’s going to be interesting how much power the L450 puts down vs the TTE475. They seem to be similar specs and output, but adding the HPFP you might have the edge.

I’ll add you to the front page.

**twyat1** · 01-02-2019, 01:17 PM

Just updated it as I missed the Turbosmart DV. I'll be happy to get 400bhp or 240-250kw atw. However, I've been told I should make more with this set up.

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**Melbourne_Tiggy** · 01-02-2019, 03:21 PM

Originally Posted by twyat1

Just updated it as I missed the Turbosmart DV. I'll be happy to get 400bhp or 240-250kw atw. However, I've been told I should make more with this set up.

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Mate, I’ve got to say that is some hot looking hardware.....especially that wheel and turbo smart DV. I’ve got a Forge DV waiting to be attached as back up just in case stock fails....

**INASNT** · 04-02-2019, 11:39 AM

Originally Posted by twyat1

Just updated it as I missed the Turbosmart DV. I'll be happy to get 400bhp or 240-250kw atw. However, I've been told I should make more with this set up.

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Noice... Stop putting ideas in my head :p