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-   -   Are You Using the #47 Fuse Bypass Relay? (http://www.mustangevolution.com/forum/f356/t359724/)

TedG 10-05-2014 08:49 AM

Are You Using the #47 Fuse Bypass Relay?
 
I've been using mine for 6 months and it's been working fine. Sure beats physically pulling the fuse every week.

http://www.mustangevolution.com/forum/f392/t354330/

iantrusive 10-05-2014 12:35 PM

I want to do it, but I'm not going to without seeing a video of the process first.


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MustangDawg 10-05-2014 03:30 PM

^+1 A Vedic on YouTube we be great
 
:thumb:

MustangDawg 10-05-2014 03:32 PM

^ Dang, sorry, I meant video.
 
Quote:

Originally Posted by MustangDawg (Post 2102363)
:thumb:


JoeyM91 10-05-2014 07:46 PM

Tried to. Followed the instructions for the relay to the T but my car flipped the hell out when I started it with it in.

Bad idle, surging and a CEL. Obviously there's something wrong with the relay, but it's just not important enough to me to redo the whole thing.

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andrewheath09 10-05-2014 09:26 PM

Ideally, doesn't the computer need to 'relearn' everything after the 47 fuse pull? Kinda like reloading a tune?

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bazinga11 10-05-2014 09:57 PM

1 Attachment(s)
Here's an actual dyno of before and after 47 pull. Stock tune.

|| ~BlackOnBlack~ ||

2011 Kona Blue 10-05-2014 11:25 PM

Quote:

Originally Posted by bazinga11 (Post 2102505)
Here's an actual dyno of before and after 47 pull. Stock tune.

|| ~BlackOnBlack~ ||

So you loss torque after pull fuse 47, wow

The Mustang Source Website is complete trash and the moderators are complete toolbags. TMS, Go F yourselves!

JoeyM91 10-05-2014 11:29 PM

Pulling the fuse then immediately on a dyno isn't a good idea. The whole system has to relearn the timing.

There's a sweet spot between the initial pull and when it starts to get "watered down".

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Midnight2012 10-06-2014 12:06 AM

Doesn't the car just relearn by driving it anyway?


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VIG 10-06-2014 12:30 AM

Quote:

Originally Posted by 2011 Kona Blue (Post 2102547)
So you loss torque after pull fuse 47, wow

The Mustang Source Website is complete trash and the moderators are complete toolbags. TMS, Go F yourselves!

Yeah, not only that, but the pre 47 pull stays higher for more time than the after 47 pull number.

There is a peak where it makes more horsepower, but for the great majority of the time the pre pull is making more power.

I'm really curious about if these would be the same results for the automatics, because I believe he drives a standard.

WhoDat 10-06-2014 02:08 AM

Quote:

Originally Posted by VIG (Post 2102559)
Yeah, not only that, but the pre 47 pull stays higher for more time than the after 47 pull number.

There is a peak where it makes more horsepower, but for the great majority of the time the pre pull is making more power.

I'm really curious about if these would be the same results for the automatics, because I believe he drives a standard.

Yeah the main reason for the Fuse 47 pull/relay is to clear the automatic's adative shifting, not really for power gains. Even with a tune, the adative shifting is still active and will cause some sluggish shifts after a while. Especially if you hit some slow-mocing traffic on occasion.


02:06 AM

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