Fatherpain’s 2018 Type R

[UnknownCTR]

Thanks for this awesome thread, it should be pinned.

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[Blazindominican]

I've finally made it to the end lol what a ride. Quite the attention to detail here. This is hard to find alot of people want to just slap parts together.

My mod progress is slow going because I'm always trying to make sure it's perfect lol I feel your pain.

This thread definitely kept my OCD at ease. Good build man. Hope to see more.

 

[armenls1]

How much gain are we talking about with a drilled fuel line Vs non-drilled when switching to the XDI HPFP? I’m thinking about the effect of reverting back to stock and putting the stock pump back on with factory tune. If someone wants to sell their car would they run into some issues with a stock pump, factory tune, and drilled line?

 

[fatherpain]

Hmm… those are very good questions and I do not have answers.

Chose to drill the HP fuel line to maximize the benefit of adding the XDI HPFP. Most have done so, but not all. XDI seemed to endorse altering the line and I was already there.

That said, for my power goals (366HP/361 torque - Conservative track tune) the XDI alone might have been enough, dunno…. Salasko Racing said lack of pressure was the reason the original tune had to be scaled back.

Repercussions for returning to stock was not considered, as the plan is to keep the car long term… however life often throws unexpected curveballs, so one never can be sure.

My initial hunch is, it would be ok going back with the modded line… But I’ll ask XDI or Salasko Racing what they think. I’ve also got some sharp engineers at work and will check with them also.

If anyone knows the answer please feel free to chime in.

Until we know the answer, failsafe options would be:

• Purchase a spare HP fuel line.
• Skip drilling the line altogether and see how the XDI performs by itself.

 

[armenls1]

It's a interesting subject to say the least. Drilling the HPFL means we're essentially increasing the size of the hole. The line itself is much wider than the opening. So the whole point of having the fuel flow through a pipe and then bottleneck into a smaller inlet/outlet is to create pressure. By drilling the line we're effectively increasing flow but decreasing pressure. So it could be that the duty cycles increase on paper but the actual power gains are minimal or non-existent?

I guess the best way for us to know would be to dyno 2 identically moded cars - one drilled, 1 undrilled. Even then there would be many other factors to take into consideration. Personally i'm opting out of drilling just for the sheer fact that you can't "undrill" the line - which leads to higher cost/more work to revert back to stock or in the event another fuel platform comes out requiring a "non-drilled" line.

 

[fatherpain]

When I checked Hondapartsnow for HPFL’s at the time the mod was done, they were unavailable. Didn’t check the dealer though.. so am unclear how difficult it would be to source a replacement.

 

[Blazindominican]

There's a shop in south Carolina. They did before and after tests on the lines affects. Theyre called FK8TD on IG. (I have no ties to them what so ever) lol just thought I'd throw that in there. I'm from/in NY.

 

[fatherpain]

Awesome find. What was the verdict?

There's a shop in south Carolina. They did before and after tests on the lines affects. Theyre called FK8TD on IG. (I have no ties to them what so ever) lol just thought I'd throw that in there. I'm from/in NY.

 

[Blazindominican]

Awesome find. What was the verdict?

His findings were that the drilled line (with the right diameter hole) made a difference but more so the right sized hole with a taper made a bigger difference. He offers this as a service now.

 

[fatherpain]

That’s good to hear. Used a larger bit to chamfer the hole after drilling.

His findings were that the drilled line (with the right diameter hole) made a difference but more so the right sized hole with a taper made a bigger difference. He offers this as a service now.

 

[Blazindominican]

I

I am no tuner, maybe someone who does would be willing to dhare their opinion.

He also offers a porting service on the Inlet of the fuel rail. Just saw the before and after images.

 

[BoostedDreams]

I

I am no tuner, maybe someone who does would be willing to dhare their opinion.

He also offers a porting service on the Inlet of the fuel rail. Just saw the before and after images.

He’s a great tuner. Lots of local people in FL use him for remote tunes. He also holds the record for highest hp made on hondata, 707whp I believe. It’s on his YouTube.

 

[jdm_mike]

@fatherpain (or anyone else) - when you had your oem lip, what did you do/use to delete the red pin strip?

 

[BoostedDreams]

@fatherpain (or anyone else) - when you had your oem lip, what did you do/use to delete the red pin strip?

Don’t remove it, cover it up. I used something like this. 1/4” black tape 3M. It conceals it perfectly. I eventually missed the red stripe and just peeled off the black tape.
https://www.ebay.com/itm/142385872332?epid=1811817468&hash=item2126dbfdcc:g:408AAOSwWPtgp-2q

 

[fatherpain]

Hi jdm_mike,

@BoostedDreams posted the link and he is 100% correct: taping over, not removing is the most prudent way to go about it

Here is the link to the red stripe delete post that’s buried somewhere in this Journal,

when you had your oem lip, what did you do/use to delete the red pin strip?

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