I am guessing most are running rubber lines on MFI. I am thinking about making up( possibly buy SS lines like used to be standard. Rubber lines have benefits of being easier to fit and less likely to crack at the flare.SS lines are harder to fit up properly and have been known to crack at flare if not fitted properly. SS lines do not deteriorate and need replacing as rubber lines do. Like most things, there are positives and negatives on both sides.

So what are you running on your injection.

Rubber, I bought the crimping tool and fittings so I can make my own

I switched from rubber to ptfe stainless braided hose. The rubber worked fine but they were getting old.

ive run both ,the stainless bent and plumbed looked much better

If you go with braided or rubber it can eventually have problems and small rubber particles clogging nozzles.

The small stainless tubing is a REAL pain in the tail to do the flare but looks so much better and will last forever. I would go with Stainless.

quote:

Originally posted by Big Steve:
Rubber, I bought the crimping tool and fittings so I can make my own

Where did you buy your tool and fittings? I need 18 hoses right now and probably another set in the next year or two, is that enough to justify the cost? The setup I’m doing now is kinda unique and stainless would be pretty hard (multiple bends in a short distance)

Yes, after about 4 or 5 years the rubber lines need to be replaced. Once a piece of rubber flakes off and wedges into an injector nozzle, you will have fun figuring out what is causing your erratic miss. Been there, done that.

quote:

Originally posted by BJs Wild Ride:

quote:

Originally posted by Big Steve:
Rubber, I bought the crimping tool and fittings so I can make my own

Where did you buy your tool and fittings? I need 18 hoses right now and probably another set in the next year or two, is that enough to justify the cost? The setup I’m doing now is kinda unique and stainless would be pretty hard (multiple bends in a short distance)

https://www.rbssuperchargers.com/ Has everything you need.

quote:

Originally posted by BJs Wild Ride:

quote:

Originally posted by Big Steve:
Rubber, I bought the crimping tool and fittings so I can make my own

Where did you buy your tool and fittings? I need 18 hoses right now and probably another set in the next year or two, is that enough to justify the cost? The setup I’m doing now is kinda unique and stainless would be pretty hard (multiple bends in a short distance)

Alky diggers,FIE and Wizzard warehouse all sale fittings and I think they all have crimping tool. I Know Wizzards Warehouse has a kit with line,fittings and crimping tool. It will not make full set of lines but you can buy more fittings and hose.

quote:

Originally posted by Joe C:
Yes, after about 4 or 5 years the rubber lines need to be replaced. Once a piece of rubber flakes off and wedges into an injector nozzle, you will have fun figuring out what is causing your erratic miss. Been there, done that.

Beats tryin g to figure out why a $300 blower belt and a75 burst panel is out. Been there done that way too many times. We got to point of pulling 16 or 24 nozzles and checking them every other run as regular PM.

Biggest obstacle to SS lines if making has been finding straight tubing to work with.Lots of rolls available, but then you have to get it straight before the bending and flaring.

As for flaring it, use to be a pain. Bought a Rigid flaring tool and man has it made that lot easier.

I have had rubber and rubber braided. never had a failure, nor any sort of plugging of lines.

That said, I have used the ptfe on some lines and love it. Few more bucks but nice

quote:

Originally posted by wideopen231:
Biggest obstacle to SS lines if making has been finding straight tubing to work with.Lots of rolls available, but then you have to get it straight before the bending and flaring.

As for flaring it, use to be a pain. Bought a Rigid flaring tool and man has it made that lot easier.

We make 2 different items at my shop from 1/4" ss tubing and we buy it in 8' straights. You can also get 6' straights from McMaster-Carr. Straight tubing is not hard to get.

It will file that back in memory bank. Guess I was just looking wrong places. Summit and jegs do have straight but at big price tag per foot.

I have a roll on the way and if I can straighten it using a tubing straightening tool. I will be good if not then I have 25' of brake line.LOL

I am going to go with ss. obviously. The initial cost is a little more. Long run I think cheaper and just one more thing not to throw a curveball at worst time.

Will say that just bolt on is a lot easier than bending up your own set. Then most things that you spend cash on instead of work are easier. Then the 300 bucks extra that abought set of SS cost will by something else like about 75% of new starter car could use.

I'm running rubber and will stay with it. Just easier I think than formed steel lines. Cheap enough to replace as needed and easier to find if there's an issue at the track...