Would it be better, or am I better off with stock?...
Would it be better, or am I better off with stock? http://cgi.ebay.com/ebaymotors/Ferrari-Berlina-Spider-355-1994-up-7mm-Racing-Wires-NEW_W0QQitemZ300053875783QQihZ020QQcategoryZ33692QQrdZ1QQcmdZViewItem
I use Kingsborne plug wires on my 348. They fit tighter/better than did the OEM plug wires, come with a lifetime warranty, and cured my exhaust "poof/pop" problem.
I am using the Kingsborne wires, they are of excellent quality! If you have original oem wires, it might be a good idea to replace them. They use the same factory Beru connectors and wire, so I almost identical. Make sure you get the 7mm versions. I have the 8mm wire version and they fit very tight coming through the cam covers and that foam plug! The 7mm will be a better fit.
I bought a set when they were 8mm size (stock is 7mm). The 8mm barely fit. I checked the resistance on them when I got them. They were at stock level, 7 ohms if I remember correctly. They did smooth out my idle a little and look good IMO with the red silicone. They also have the cylinder #'s marked on them and are the correct length. The 7mm should fit perfectly. I am happy with them.
I ordered mine in black, as I wanted a stock appearance in the engine compartment. They will make them in several different colors, just ask.
I thought the factory spark wires have a carbon core and the Kingsborne wires have a copper core. If this is so are their any negatives in using the copper core Kingsborne wires? Are there any advantages to using the factory carbon core wires? What effect does it have on the operation of the electrical system (if any)? (Certainly the price of the factory wires ($1200.00 a set here) is outrageous.) If there is no difference.....why would the factory install the carbon wires? Note: I spoke with the dealer and they strongly suggest using the factory carbon wires but no technical reason was provided
Kingsborne uses the same Beru brand components as the factory wires. As Gothspeed mentions, they test out with the same resistance as well. There is essentially no performance difference. I have no idea what the make up of the wire itself is, but the fact that the resistance remains the same as stock you will have no problems. Several of us are using the Kingsborne wires with no problems...in fact I have heard of no one having any troubles, except with when Kingsborne supplied them with the larger 8mm wire size (harder to fit). Just make sure you get them with the stock 7mm wire size.
There is noticeably more radio "whine" interference with my Kingsborne plug wires than what I had back with the OEM wires. ...I wouldn't go back, though.
Would the lack of radio whine be due to your 8mm wires rather than OEM 7mm, or due to the 355's cover over the spark plugs/wires?
I am betting it is more related to shielding on your radio or amps...or their related wiring, than the the plug wires. I had no interference issues with the factory 7mm wires, or the Kingsborne. I don't think the cam covers have anything to do with reducing radio interference, I think it was just another way to dress up the engine compartment and perhaps to further isolate water intrusion from the plug wells. (the plug extensions have seals that fit against the plug wells (three in fact on the latest Beru extensions, the originals had one), but the addition of the cam cover gives you some additional sealing; though I think the way those cam covers seal over the wires is so rinky dink, that it doesn't add much if any additional protection) I have a good friend with a 348 spider with a very elaborate stereo system in his car (amps, subs, etc) and he still has the factory original wires in his car, and no interference (whine) issues. BTW, on my car I recently installed a Kenwood indash cd player and 10 CD changer....but all the wiring and speakers are factory. No interference before the installation or after (I installed it myself).
It could just be that one of my 348's prior owners left stereo wires all over the place. The first CD player with my car was DOA, so I replaced it, and within a few months *that* CD player died, so I replaced it with a 3 disc in-dash player/changer that never worked except for the radio...then I replaced that CD player with a spare 1 CD player that I had laying around... ...so I've been all in the dash and there are wires going to an aftermarket amp (huge thing...I've got to yank it out) and to speakers that are no longer in the doors. So maybe it's just that the "extra" wiring in my car is more sensitive to interference. I could barely hear the rpm whine with the OEM plug wires, but it was so noticeable with the new Kingsborne wires that I had to turn the stereo off to make certain that I wasn't hearing bearing whine (whew!). Anyway, if no one else is noticing radio whine with either 7mm or 8mm Kingsborne plug wires, then I'll just chalk it up to my car as being a bit over-wired.
One thing I will never lay claim to is being any type of audio/video guru but as others have said I suspect your noise has more to do with your sound system than the plug wires. I do know getting rid of RF noise is an easy task these days and I suspect a trip to any half way decent auto stereo shop should result in being offered a surpressor of some nature.
Thanks. I agree. I've isolated the noise to the Amp now, and picked up a noise supression filter (though it is a little large for my tastes so I'm still debating installing it or not). Anyway, I want to yank that amp eventually. The sound system just hasn't been a big motivator for me to tweak.
I have an elaborate stereo with PPI 600 amp under the bonnet. All you really need are some very high quality (well shielded) RCA cables and ground "everything" that should be grounded. Another reason you could be getting noise are the level settings on your amp. If they are too high they will pick up everything. Try setting them @ 50% - 70%. And another reason: If the RCA signal level coming out of your stereo is only 2.5V vs 5V on high end head units. Test the levels with a multi-meter at 80% volume level.
plug wires IMO have nothing to do with stereo/amp whine. its your alternator and other accesories ... try grounding all your components at one point...prevent ground looping.. my 348 wires were junk..not carbon.. very stiff /low shielding cable, i purchased some aftermarket kingsborne..? or the like . everything is fine...