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-   -   Which step for avoiding detonation on 87? (http://www.aquamist.co.uk/forum2/vbulletin/showthread.php?t=3171)

Dust 09-04-2019 07:45 PM

Which step for avoiding detonation on 87?
 
I just purchased a 1.4L turbocharged vehicle that is tuned at the factory for 87 octane, but during the summer, will pull timing even on 93 due to knock. I am not looking for “more power”, but simply looking to not have timing pulled. I understand that 87 and performance don't mix, but the wife may be driving the car, so I want 87 as the baseline if she fills up.

I am considering the following five choices.

I own the necessary parts for the water/meth kit, as well as enough meth to keep the kit fed for 2 years.

rotrex 10-06-2019 07:53 AM

Re: Which step for avoiding detonation on 87?
 
All water injection that actually does something, i.e. provides a high enough water to fuel ratio, needs a retune.
Without adapted ignition timing, it will actually reduce power.

You could add a FMIC spray as an alternative. This won’t require a retune.
Flexfuel is also a good choice.

Dust 11-06-2019 02:33 PM

Re: Which step for avoiding detonation on 87?
 
Quote:

Originally Posted by rotrex (Post 24838)
All water injection that actually does something, i.e. provides a high enough water to fuel ratio, needs a retune.
Without adapted ignition timing, it will actually reduce power.

You could add a FMIC spray as an alternative. This won’t require a retune.
Flexfuel is also a good choice.

FMIC is behind AC condenser. That is why people have problems with knock. I guess I could cool the AC condenser.


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