PROMO PRECISION RACEWORKS N55 IGNITION KIT IS HERE!

PRECISION RACEWORKS

Corporal
Platinum Vendor
Nov 11, 2016
144
HOUSTON TX
N55 HIGH OUTPUT IGNITION COILS ARE FINALLY HERE!
(CLICK HERE TO ORDER)


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THIS IS PRE-ORDER, ORDERS WILL SHIP BY END OF MARCH

Pre-order price will change in April


THE MOST POWERFUL IGNITION SYSTEM THE N55 COMMUNITY HAS EVER SEEN!

Our complete ignition system is designed to replace the factory pencil style coils which are prone to failure and incapable of properly supporting the needs of high horsepower applications. Our kits all comes complete with new ignition coils designed in house and manufactured to our specifications based on the needs and capability of the N55engine.

Before now the only solutions for the N55 community were all pencil style coils which are incapable (due to size limitations) of producing the same output as larger Ignition Block style coils. To make the best of the small package the pencil coil has, they are designed for high voltage output but very low current output. This means the spark will bridge the gap on the spark plug and then disappear. There is no duration to the spark and in the event the fuel does not ignite (or ignite fully) in that very short period of time you will have a misfire or incomplete burn.

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Because of the constraint of space to put components in a pencil coil reliable and proven ACDelco ignition coils(PN D585 / LS Truck Coils) paired with short plug wires are used in high horsepower applications everywhere. So why didn’t we just make a kit using these coils since they are the “standard” in many high horsepower applications?
  • Your car is specifically designed to run “Dumb Coils” and the ACDelco coils are “Smart Coils”
This leaves four options for adapting the car to work with them
1. Remove the factory DME and replace with Standalone system
- Very costly & you lose some factory functions
2. Remove the factory DME and change circuitry of the board to control “Smart Coils” instead of “Dumb Coils”
- Not a plug and play solution you can do at home, requires sending off your factory DME for custom work
3. Add additional electronics to convert the IGBT output from the factory DME back to 5V square wave to drive the “Smart Coils”
- The factory system only has 1 IGBT system that can fail this solution has two IGBT systems that can fail, plus an additional converter box that can fail as well. This results in 3 possible failure points. In addition the DME no longer can “see” the coils which could cause other potential problems with how the computer is designed to monitor and react.
4. Use the IGBT negative output and constant power with resistor to drive the IGBT inside the "smart coil" backwards
- As above the factory system only has 1 IGBT system that can fail this solution has two IGBT systems that can fail, plus a resistor which heats up and can fail as well. This results in 3 possible failure points. In addition the DME no longer can “see” the coils which could cause other potential problems with how the computer is designed to monitor and react.
- Flashing of the DME to suppress errors caused by using "Smart Coils" in place of "Dumb Coils" is required

- During testing of this approach it was found that the ignition coil produced about 1/2 of its original capability

- Testing also showed an increased stress on the IGBT in the coils increasing the failure rate and overall longevity of the coil
  • The ideal dwell time (calculated based on Duty cycle, RPM, and Duration) plays a big role in selecting the right ignition coil in any application
The maximum dwell time of 3.5ms is a fixed value for the N55 engine (allowing headroom for built motors turning more RPM)
1. The ACDelco coil has an ideal dwell time of close to 4.5ms
- Since the ACDelco coil would only be allowed a maximum charge time of 3.5ms the output is greatly reduced to 90mj while the Precision Raceworks coil is capable of 118mj
So not only as explained above using a “SmartCoil” isn’t a great idea on the N55 as it is not designed for it you also need to consider the ideal dwell time allowed by the car and the design of the coil when making the proper selection. We have also included the quick reference chart below to better understand performance of the LS coil, OEM coil, PR coil,and for fun Lamborghini coil. Showing that there is no standard each coil is designed to work within specific calculated dwell periods so the correct coil must be selected or designed for each application.
  • Why choose Precision Raceworks
By designing our own coil we were able to take into account the available dwell time of the N55 as well as the IGBT system being built into the DME. We were even able to take into consideration the ohm load of the factory BMW coil that came in the N55. What this means is our coil looks exactly like the factory coil to the DME maintaining all functions allowing the computer to monitor and react as designed by the engineers at BMW.
  • So why does the N55 have an High Voltage Ignition Driver?
At this time dwell control has not been unlocked in all versions of the N55 DME so we designed a High Voltage Driver that when matched with the factory dwell times brings the coils to full saturation (maximum output) at the lower dwell times the factory has programmed into the car's computer. This also means that cars with built motors that rev up to and past 8,000rpm will be able to reach full saturation even at the top of the RPM band something that could not be accomplished with longer dwell time.

  • Summary
o Precision Raceworks coils are designed specifically for your car
o DME Flashing Not Required

o High Voltage Ignition Driver included means maximum output at factory dwell


o Designed for optimal dwell time available
o More energy output than any other coil tested
250% more energy than the BMW coil pack
 

PRECISION RACEWORKS

Corporal
Platinum Vendor
Nov 11, 2016
144
HOUSTON TX
Is this an improvement to the factory system for stock turbo applications or just at higher boost levels?
This is a tricky question, we do not believe in marketing coils as something that increases horsepower. Though we don't believe it should be part of marketing the higher output coils have been shown to directly correlate to higher horsepower without any additional changes.

Where we would rather focus marketing is reliability and output. These coils are significantly more robust than any other coil on the market and it will be very rare for them to fail unlike pencil coils used by the factory (both stock level and higher horsepower pencil coils fail). They also have a much higher output resulting in a more complete burn of fuel, easier starting, and much smoother idle at all power levels.

So are there benefits on stock turbos absolutely, but as with any modification you make to your car it is up to you to decide the value it holds for you. In the N54 market we have hundreds of kits being ran on stock turbos and hundreds more with upgraded turbos both are very happy with their results.
 
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PRECISION RACEWORKS

Corporal
Platinum Vendor
Nov 11, 2016
144
HOUSTON TX
Which versions of the N55 DME's can change dwell control thru a flash? I'm guessing Early E-series only.
We currently do not have tables setup for flash only option, we are working on them with different people behind the scenes but at this time we are not positive which all DME's will be able to have dwell control through DME table changes.
 

V8bait

Sergeant
Nov 2, 2016
457
Texas
Is this an improvement to the factory system for stock turbo applications or just at higher boost levels?
It's an improvement over factory in reliability but most gains would be at high boost/power. If you are having misfire issues and gapping down to .018 or .017" then you are likely losing power and blowing through coils from stressing them. These allow you to open the gap to a more rational level while preserving spark duration for midrange torque, giving you a little more room for error and ultimately better supporting high power levels.
 

4pasnu

New Member
Mar 19, 2018
4
It's an improvement over factory in reliability but most gains would be at high boost/power. If you are having misfire issues and gapping down to .018 or .017" then you are likely losing power and blowing through coils from stressing them. These allow you to open the gap to a more rational level while preserving spark duration for midrange torque, giving you a little more room for error and ultimately better supporting high power levels.
Have no issues with my machine. Just installed JB4, chargepipe and xhp stage 3 tcu. Still sitting in the garage to install is a VRSF catless DP, 7" IC and turbo chargepipe. Want to stay ahead of the curve by upgrading parts that are known to fail. I have no plans of build a 20+ psi beast. Just want something alittle more fun but still a true sleeper to those pesky cars.
 
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