+1 they are the only wires I only wires I will run from a parts store.

 

hmm i cant find em on napa site. the blue ones anyways. however i had planned on getting my cap and rotor from there neways so when i go ill check em out. ty all

 

http://www.summitracing.com/parts/MSD-5532/
i use these theyre pretty good for the price and they fit is place of the stock wires

 

The price may be good, but the quality of the wire and boots are not. The MSD Street Fire spark plugs use a boot that is SMALLER than the factory boot. My first (and last) set started arcing and misfiring after only 15,000 miles. Even my crappy Valucraft wires lasted 30,000 miles, and it took a bunch of Purple Power degreaser to get those to misfire. The NAPA Belden wires I just got for $35 are much higher quality than the $50 MSDs. I have learned NOT to buy into the performance spark plug wire business.

Plus, what kind of warranty do those MSDs have? Seriously, I want my money back.

Here they are:
http://www.napaonline.com/Search/Det...144+4294960875#
Cap: http://www.napaonline.com/Search/Det...999+4294943317
Rotor: http://www.napaonline.com/Search/Det...999+4294943317

 

High end performance wire will net you nothing as far as performance over stock wires.....Unless you have a high end HEI ignition system that can utilize the added conductive and insulation properties....and then of course you cant be using your run of the mill stock resister type spark plugs either or they will be the limiting factor...
You just need decently priced and quality oem equivelent. manufacturers market this stuff like snake oil to make money off the misinformed ....might as well buy $300 in monstercable for your car stereo while your at it...oh and be sure to buy colorful wires they work better

 

THere's one thing that needs to be mentioned here and, that is, that 90% of the wires out there are complete rubbish and, for the record, MSD falls into that category.

Same can be said about Accel wires as well as numerous brands that all use junk core wire that is not shielded properly for one and, uses a cheap **** boots and ends.

I have tested four types of wires and every one but two had failed to shield RMI and from crossfire induction. Those were MSD Supers, Accels, Moroso's Ultra 40s and Napa Belden Blues. I had issues with all and, those issues were mis and crossfires.

MSDs gave me an open circuit condition and intermittent fault conditions in addition to misfire and crossfire condition.

MSD and almost everyone out there buys the wire from one manufacturer. They rave about the low ohm spec but, there's an issue- that low ohm wire is not intended nor was it ever intended to be used on an EFI application period. In using those, it creates a real issue with radiation into the EFI components and wiring harness all the way to the PCM and can fry or damage the chips in the PCM. Despite claiming to have superior shielding, I found misfires a plenty.

One of the problems is the wires that are being shoved into parts stores with the S&M pitch of super low ohms are the "in thing" and "you'll get more HP"- that is complete BS and nothing but pure S&M racket to get the unknowing consumer to buy their products. The fact was, when we dyno'd some engines recently with MSD wires, we saw a loss in HP vs. when using Magnecor and Taylors, we saw an increase in HP due to no loss.

Now, not to misunderstand this, it's not that the latter wires were contributing to more HP- they weren't but, they were allowing the FULL potential of what the engine was capable of go through whereas, MSDs were not efficient and power was lost as a result.

I have run two sets of MSD, top of the line Super-8.5s and, in both tests, they crapped out, had issues with EMI shielding (which f-s up the PCM and EFI system due to EMI radiation) had issues with inferior crimping, poor mechanical design on the metal ends and huge, heat storing molded boots that entraps heat at the plug thus causing the plug to run hotter than was designed. It also makes for a pain in the **** to remove those boots as well due to the cheaper silicone in the boot mixed with a polymer / rubber material.

The boot is perforated / pressed in such a way that it weakens the metal thus allowing it to distort or, in my case, bend outward thus opening up and losing contact due to sloppy fit.

I had noted no continuity on one wire 100% and, when opening it up, found the spiral core to be broken three - four inches above the top of the boot line. I also noted three more MSD wires that were intermittent in continuity thus bending or vibrating conditions would generate a fault. This adds up to a 50% failure rate.

In all cases, I personally avoid MSD wires like the plague. I would rather use piano wire than their stuff. They used to make some good stuff but, over the years, they have had some quality issues across the board- not just their plug wires. Same can be seen with their Dashhawk POS that they were selling and now no longer support. (According to the MSD forum)

In all cases, the super low ohm wires are to be avoided like the plague on EFI vehicles. The original intent was to be used on NON-EFI applications such as race engines where, there's no computer.

It is my personal opinion based on use and test that Magnecor wires, hands down, are the best wire that you can get that will outlast any plug wire on the market today and give superior resistance over it's lifespan, coupled with 100% of the highest grade silicon for the insulator as well as exterior of the cable. Magnecor. http://www.magnecor.com/magnecor1/main.htm

They make their own wire for starters and, all the materials are top quality. Even when using the standard, race-car wiring look, I have yet to experience a mis or cross fire condition under high load conditions such as towing.

The other company that also makes their own wires and has a great boot design is Taylor wire company. Their ends are great, allow heat to dissipate and, are easy on/off.

I would not use their low ohm wire but, their mid resistance wire and, most likely, an 8mm wire set would suffice.

 

MSD wire are really good. The Taylor custom wires are great too. Thats what I am running now, they go about $80.

 

Did you just read the article above?

cmckenna - What were your test results with the NAPA Belden wires?

 

Belden suffered from crossfire induction and misfires under loading. Not noticed on flat freeway driving / under no load conditions. They required routing to the TSB in order to prevent induction crossfire and, up steep mountain runs up to the high desert, I noted misfiring. Threw a CEL along with a P0 error as well.

I use this same stretch of highway (the 15 North) out of the LA basin up to the high desert areas for all my test runs. I document it every time so I can have some empirical data to review later on. FYI

 

Hmmm. So, after how many miles did they start to misfire?

It seems like my next plug wires will be from Magnecor.