waterinjection.info - Hfs4 or 3 for 996tt?

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infinkc

20-08-2016 07:04 AM

Hfs4 or 3 for 996tt?

I have both systems from previous cars, just curious if the hfs4 would be an over kill for the 996tt? I had The hfs4 for a direct injection engine.

Richard L

20-08-2016 07:57 AM

Re: Hfs4 or 3 for 996tt?

Either system will work. HFS4 has a but more tweaks on the flow curves compared to HFS'3 IDC tracking (mainly).

I think HFS3 with 30% boost compensation is more than adequate.

infinkc

22-08-2016 11:22 PM

Re: Hfs4 or 3 for 996tt?

thanks richard. any idea what size jets to run? running stock turbos 1.1bar.

Richard L

04-09-2016 08:00 AM

Re: Hfs4 or 3 for 996tt?

1.5cc/hp @M50/W50 is a good starting point

The 996T does well with 2x 1.0mm.

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