RiffRaff HPx install
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Senior User
Joined: Jan 2016
Posts: 222
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From: Carnation
RiffRaff HPx install
Just installed the RiffRaff HPx line in my truck, after work today. Injector clatter quieted down, and idle smoothed out noticeably. It was an immediate change. Smooth acceleration all the way, no hesitation or glitches. Sweet ! Fairly straightforward installation, very high quality stainless steel line, large diameter too. I couldn't be happier with the result. Recommend this to everyone.
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Senior User
Joined: Jan 2016
Posts: 222
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From: Carnation
Ditto. I was impressed by the graph I saw on the RiffRaff YouTube video. The ICP spikes go away, and the idle smoothed out noticeably. ICP is almost constant at idle, and that is a measurable improvement. Wonder why IH didn't install these at the factory !
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
You know, I won one of those at RRE 1 way back when and it is sitting in my toolbox, I never did install it....I should "give it a go" considering how many times I have had the valve covers off, the turbo off, etc....
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
I have to find the fittings. When I won it, he had forgotten the fittings and shipped them to me later. Then I had the fittings in the house and the HPx itself in my toolbox at the shop where I do most of my work on my truck. It became one of those out of sight, out of mind things after the fact.
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Laughing Gas
Joined: Nov 2010
Posts: 1,193
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From: D.C. but heart's in TEXAS
Only suggestion is to have a big cushion to lay on top of...unless you're lucky enough to own a topside creeper.
Laughing Gas
Joined: Nov 2010
Posts: 1,193
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From: D.C. but heart's in TEXAS
OH, and if not already mentioned, it takes about 50 miles of driving for it to completely smooth out and for you to see the full benefit.
