| Author | Message | ||
     Sub65chris |
Does anyone know of an aftermarket coil for our bikes that is like the flamethrower coils you can get for old school trucks. it is something like 90,000 volts ,im not really sure but it gives the old trucks a little more pep and might do the same for my city-x . any problems that you can think of by doing this if i can find one? I already cut my airbox , put in a k&n and got a new ecm of of ebay , and took the extra baffles in my exhaust so it flows better . thanks , later | ||
| 99buellx1 |
I'm not an electronics guru, but I dont see where it's gonna give you any more power. As long as the setup you have now is burning the mix properly, changing it will be a waste of time and $$$. | ||
| Fullpower |
leave your CITY-x coil alone. it is more than adequate to light the fire in your 10:1 compression motor up to 7500 rpm. MORE than enough voltage. that motor is SO efficient that it does not need a catalytic converter to meet emmisions standasr. think about that for a moment. | ||
| No_rice |
here i was hoping someone else was trying to put a flame thrower on there bike... | ||
| Midknyte |
here ya go 'rice  | ||
| Sub65chris |
fair enough just throwing things out there to see what yall are doing . thanks ,later | ||
| Ara |
Hold up. I put an SE coil on my '97 S3 quite a number of years ago and I think it was a mild improvement. I was told at the dealership that the stock coil's output was 17Kv but that the SE unit put out 47Kv. It's not a flamethrower, but is a significant increase in output voltage nonetheless. I have a #45 pilot jet, the stock #195 main jet, a Stage 1 Dynojet kit, a gutted airbox, and a K&N filter and I get as much as 63 mpg. I've never gotten less than 57 mpg. I think that the coil and the heavy duty Taylor ignition wires are part of the equation that produces high mpg figures like that. Do this: Rather than considering this blindly, why not get some hard data to consider? Find out the voltage output of the OEM coil and then at least you'll know what you have right now. Knowing that will make a change to something else more than a shot in the dark. BTW, I am not impressed by the fact that your bike does not need a catalytic converter to meet EPA spec. That is more a function of what the spec is than how your bike is set up. | ||
| Reepicheep |
I believe Aaron has some tests here in the knowledge vault somewhere where he put single fire and dual fire ignitions (which would be a very relevant data point for this question). As I recall, there was a barely perceptible (on the dyno, nothing on the butt) improvement. I'm with FullPower, I think the money and time would be better spent elsewhere. | ||
| Ara |
Reep, I disagree. Single-fire vs. dual-fire is an entirely different matter from voltage output. I'd really be interested in a dyno comparison between the anemic stock coil and the Screaming Eagle coil, just to either verify or debunk my impressions. | ||
| Txfatcat |
Has anyone come up with anything on this? I know from my own experience with building race cars and engines. I have seen a very noticable difference when using an aftermarket high output ignition system | ||
| Sparky |
The stock XB coil packs enough punch voltage-wise to very satisfactorily fire Torque Master spark plugs which have a "ring" ground electrode, an effective spark path of 0.120" and are virtually foul-proof. However, if one were to install a higher performance coil, there would have to be similar changes made in the ignition system to take advantage of the increased firepower, such as low resistance spark plugs and plug wires that don't radiate EMI to upset the ECU, and plugs with an increased gap. The downside is that all these changes probably wouldn't show much of an improvement on an otherwise stock or race-kitted engine, except maybe for slightly improved throttle response, which is always nice.  |
