Found these at calmuscleparts. Do these work?
Will they deliver 12HP??? to a GT

2005-2007 MUSTANG 3V GRANATELLI COIL NEAR PLUG CONNECTORS

For more performance, these coil near plug connectors are a nice upgrade at a low price. Adds up to 12hp to a normally aspirated engine and 25hp to a turbo or nitrous power plant. Improves spark with O ohms of resistance and no radio Interference.

 

highly doubtful

 

What the hell are they?

 

i've heard of people losing epic amounts of power with these.

stay away.

 

You need the COPs too.

Read this:

https://mustangforums.com/m_4577810/tm.htm

 

Wow too much bad information in this thread. There are just the connectors not the COPs.
The connector upgrade will not increase horsepower at all. It will keep you from missing a spark though. The braided connectors are nice but you need to buy the COIL OVER PLUGS too.
They are the coils that these connectors attache to and then the spark plug on the bottom.
Nobody loses horepower from upgrading COPs but there were some problems with Granatelli's first version of their COPs in which case there were some failing.
If you have a failed coil any car will lose power. If the coils were all working then there would not be a loss of power.
A good coil upgrade is worth 8-30 Horsepower on the 3 valve.

 

Thanks for the additional info. I'd say we all want to behelpful and give our input....but just maybe if ya really don't know...really don't knowbecause you haven't done it yourself, thenhold off on the advising part.

I will follow up on the other thread...Thanks

 

hahahaha....funny statement of the day!

 

Let me ask this... COPS make the plug do what, spark better and burn fuel better? So does this end up in more engine heat being generated?