Small Supercharger whine? NO just MSD coil?

89fast5oh · 04-03-2004, 08:46 PM

I just installed a new MSD TFI coil on my car and now it has a noticable humming/whining comming from the general area of it. You can hear it more inside the car than under the hood, even with the radio off. What gives? is it supposed to do this? I have a set of new FMS 9mms in a box i'm going to put on, will this do anything to quieten it down?

GhettoPop · 04-04-2004, 02:11 PM

had same exact problem with TFI coil. cintacted MSD they said to isolate coil with rubber grommets, dd that and did not help anything. heard its common problem in mustang. i am returning mine to summit and going with the BLASTER SS, the re ine with the fine. requires a little more work to blot up and u cant use the stock connector, but i will give it a try. that BLASTER TFI noise was too much to get used to, annoyed the piss out of me!

ols0051 · 04-04-2004, 06:15 PM

Mine does the same thing. "a poor man's blower".

speedytang · 04-05-2004, 01:25 AM

3 years and still works great.

89GTimporteater · 04-05-2004, 01:44 AM

yeah, they do that.. I put mine in and thought I had a bad flourescent light ballast in my car.. It just hums like hell. Essentially you have changed your spark voltage and current enough to where the difference is like that of rubbing your feet on carpet and touching a door knob to licking a bug zapper.

They are kind of loud though aren't they..

sedanman · 04-05-2004, 07:12 PM

It's normal, almost all aftermarket coils do it.

tireburner163 · 04-06-2004, 09:57 AM

My MSD Blaster SS coil is silent. Or at least I've never noticed any hum, etc.

-Josh, aka the tireburner

04-03-2004, 08:46 PM	#1
89fast5oh Registered Member Join Date: Apr 2002 Location: Canada Posts: 56	Small Supercharger whine? NO just MSD coil? I just installed a new MSD TFI coil on my car and now it has a noticable humming/whining comming from the general area of it. You can hear it more inside the car than under the hood, even with the radio off. What gives? is it supposed to do this? I have a set of new FMS 9mms in a box i'm going to put on, will this do anything to quieten it down? __________________ 351W .030", AFR 185s, Crane roller cam-.543" 220 -.562" 228@.050, TFS 351W EFI intake, Billet Roller Rockers, BBK Long Tubes, BBK X- Pipe, Dynomax Race Magnums w/dumps, 30lb injectors, 190lph intank pump, Holley Adjustable FPR, 75mm TB&MA, Underdrive pulleys, Aluminum Rad, Billet Flywheel, McCloud Clutch, World Class T-5, B&M Ripper Shifter 4.10s, McCreary G-60s, Lakewood 90/10s, Comp. Enginering 3 way adjust/rear, Upper and Lower Control arms, Autometer gauges.

04-04-2004, 02:11 PM	#2
GhettoPop Gimme a Drink! Join Date: Dec 2002 Location: NYC Posts: 694	had same exact problem with TFI coil. cintacted MSD they said to isolate coil with rubber grommets, dd that and did not help anything. heard its common problem in mustang. i am returning mine to summit and going with the BLASTER SS, the re ine with the fine. requires a little more work to blot up and u cant use the stock connector, but i will give it a try. that BLASTER TFI noise was too much to get used to, annoyed the piss out of me! __________________ 1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong!

04-05-2004, 07:12 PM	#6
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	It's normal, almost all aftermarket coils do it. __________________ 04 Screamin Yellow Cobra KB 2.4 (585/556 pump 626/666 race) 00R brakes, DFX clutch, Level 5's, return fuel system, Lts with 3" exhuast, FR500 wheels and all the other fun stuff. GONE 1991 Lx sedan 5.0, 5spd (Liberty proshifted TKO) S-trim, Ported TF heads everything parted out.

04-06-2004, 09:57 AM	#7
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	My MSD Blaster SS coil is silent. Or at least I've never noticed any hum, etc. -Josh, aka the tireburner __________________ 1987 Buick T-type 1998 HD Electra Elide

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04-04-2004, 06:15 PM	#3
ols0051 Registered Member Join Date: Sep 2002 Location: cent.wis Posts: 203	Mine does the same thing. "a poor man's blower".

04-05-2004, 01:25 AM	#4
speedytang Registered Member Join Date: Oct 1999 Location: Marengo, Ohio.USA Posts: 135	3 years and still works great.

04-05-2004, 01:44 AM	#5
89GTimporteater Registered Member Join Date: Mar 2003 Location: Rolla, MO Posts: 15	yeah, they do that.. I put mine in and thought I had a bad flourescent light ballast in my car.. It just hums like hell. Essentially you have changed your spark voltage and current enough to where the difference is like that of rubbing your feet on carpet and touching a door knob to licking a bug zapper. They are kind of loud though aren't they..