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      03-17-2021, 01:13 PM   #1
haaken675
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Precision Raceworks coils-Are they worth it?

Like the title says, are they worth the money? Running Pure 600's, downipes, intercooler, inlets/outlets, the works,,,

I am waiting on 2 step colder NGK's as I am getting missfires at higher gears under load. I am willing to bet i likely need new coils as well. I'm running MHD stage 2+ for reference.

Is it worth the moeny upgrading to these?
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      03-17-2021, 01:39 PM   #2
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Quote:
Originally Posted by haaken675 View Post
Like the title says, are they worth the money? Running Pure 600's, downipes, intercooler, inlets/outlets, the works,,,

I am waiting on 2 step colder NGK's as I am getting missfires at higher gears under load. I am willing to bet i likely need new coils as well. I'm running MHD stage 2+ for reference.

Is it worth the moeny upgrading to these?
Don't see the need for them, Eldor Coils should be good enough.

MHD stage 2+ on Pure 600 turbos and Inlets/Outlets ?

Should be on a custom map, stage 2+ maps are for stock turbos and don't take inlets/outlets into consideration.
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      03-17-2021, 02:02 PM   #3
haaken675
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Quote:
Originally Posted by Saif2018 View Post
Don't see the need for them, Eldor Coils should be good enough.

MHD stage 2+ on Pure 600 turbos and Inlets/Outlets ?

Should be on a custom map, stage 2+ maps are for stock turbos and don't take inlets/outlets into consideration.
Would love a custom map. That may be on the list of things for the future. Pretty happy with how fast the car is currently. Going with the Pure 600's was more for overhead then anything else.
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      03-17-2021, 03:12 PM   #4
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Quote:
Originally Posted by haaken675 View Post
Would love a custom map. That may be on the list of things for the future. Pretty happy with how fast the car is currently. Going with the Pure 600's was more for overhead then anything else.
You could get a Conservative custom map or aggressive one as well.

If it's working fine, then you may be able to get away with OTS stage 2+ maps for the time being.

Did you check your logs and codes to see which cylinders were misfiring and swapped plugs and coils round to confirm?
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      03-17-2021, 03:22 PM   #5
haaken675
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Quote:
Originally Posted by Saif2018 View Post
You could get a Conservative custom map or aggressive one as well.

If it's working fine, then you may be able to get away with OTS stage 2+ maps for the time being.

Did you check your logs and codes to see which cylinders were misfiring and swapped plugs and coils round to confirm?
Cylinder 2 missfire. I'm on stock (albeit brand new) plugs. New plugs come in tomorrow, and then I will be logging to see if I can create the same scenario again. That being said, I'd rather not go into limp mode on the highway again during rush hour...
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      03-17-2021, 04:30 PM   #6
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Quote:
Originally Posted by haaken675 View Post
Cylinder 2 missfire. I'm on stock (albeit brand new) plugs. New plugs come in tomorrow, and then I will be logging to see if I can create the same scenario again. That being said, I'd rather not go into limp mode on the highway again during rush hour...
Yeah avoid testing during rush hour.

Swap plugs from cylinder 2 to another one and check if misfire follows, if it doesn't, then swap coils frim cylinder 2 to another and see if misfire follows.

Could be coils and/or plugs at fault.
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      03-17-2021, 07:56 PM   #7
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I would check out a new product by Nexsys Motorsports using B58 coils. They have tested all/most coils for N54 and the B58 coils perform the best pretty much

Take out the spaces and 00 = oo . Zeros equal ohs lol
Nexsys plate and coil info
https://www.sp 00 lstreet.com/threads/nexsys-motorsport-n54-ignition-coil-upgrade-kit.7170/

Coil testing

https://www.sp 00 lstreet.com/threads/ignition-coil-secondary-spark-energy-comparison-n54-n55-b58-and-pr.7169/unread


MHD will(or already does, confirmed by jyamona) have a check box for this new aftermarket option
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      03-17-2021, 09:29 PM   #8
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Quote:
Originally Posted by Saif2018 View Post
Yeah avoid testing during rush hour.

Swap plugs from cylinder 2 to another one and check if misfire follows, if it doesn't, then swap coils frim cylinder 2 to another and see if misfire follows.

Could be coils and/or plugs at fault.
Wasn't trying to test during rush hour, lol. I've owned my car for over a year, and only driven it maybe 500 miles. I've done the rear subframe and diff bushings, new control arms, coilovers, solid motor and trans mounts, downpipes, new turbos, dci's, intercooler, inlets, outlets, control arms, radiator core support, radiator, all new coolant hoses, waterpump/thermostat, oil pan gasket, evaporator, condenser, the list just fucking keeps going...I have damn near rebuilt the entire car...Working on weekends hear and there with having a 1 year old and another on the way along with all the other responsibilities i haven't been able to enjoy my car. Got an alignment finally and gave it a little gas on the on ramp coming home and went into limp mode, lol.

Hopefully the new plugs fix the issue. If not, looking into a coil solution. I like the b58 option, but damn that an expensive route, hence why i was looking into the precision raceworks option or something similar.
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      03-17-2021, 10:31 PM   #9
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Quote:
Originally Posted by haaken675 View Post
Wasn't trying to test during rush hour, lol. I've owned my car for over a year, and only driven it maybe 500 miles. I've done the rear subframe and diff bushings, new control arms, coilovers, solid motor and trans mounts, downpipes, new turbos, dci's, intercooler, inlets, outlets, control arms, radiator core support, radiator, all new coolant hoses, waterpump/thermostat, oil pan gasket, evaporator, condenser, the list just fucking keeps going...I have damn near rebuilt the entire car...Working on weekends hear and there with having a 1 year old and another on the way along with all the other responsibilities i haven't been able to enjoy my car. Got an alignment finally and gave it a little gas on the on ramp coming home and went into limp mode, lol.

Hopefully the new plugs fix the issue. If not, looking into a coil solution. I like the b58 option, but damn that an expensive route, hence why i was looking into the precision raceworks option or something similar.
Yeah I didn't realize their kit didn't come with coils, that def adds up making it about $600+ total, just a little more than the PR kit lol. I was actually going to order it today until I saw that.
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      03-18-2021, 08:47 AM   #10
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PR coil kit didn't net me any improvements at 25+psi on upgraded twins. Neither drivability, idle, nor power. They look cool I guess. If you keep getting misfires or limp mode, I'd advise looking elsewhere first. You can always swap coils between cylinders as well to prove if it's a bad coil.
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      03-18-2021, 09:12 AM   #11
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Quote:
Originally Posted by IllSic_Design View Post
Yeah I didn't realize their kit didn't come with coils, that def adds up making it about $600+ total, just a little more than the PR kit lol. I was actually going to order it today until I saw that.
$600+ for coils is a lot of money. Is it even worth it, over the Eldor Coils?

I remember getting all 6 Bosch plugs and Eldor Coils for under $200
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      03-18-2021, 07:50 PM   #12
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Quote:
Originally Posted by Saif2018 View Post
$600+ for coils is a lot of money. Is it even worth it, over the Eldor Coils?

I remember getting all 6 Bosch plugs and Eldor Coils for under $200
I would have done $300, def not $600+. I have read that it usually does help, and have seen dynos to prove it. But everyone's car is different, and if you're not pushing it it's def not worth it.
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      03-19-2021, 03:01 AM   #13
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Quote:
Originally Posted by IllSic_Design View Post
I would have done $300, def not $600+. I have read that it usually does help, and have seen dynos to prove it. But everyone's car is different, and if you're not pushing it it's def not worth it.
Any idea what power/torque level the standard Eldor/Delphi coils can handle?
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      03-19-2021, 06:45 AM   #14
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Iím not sure if you have an msd80 or 81 ecu, but for what itís worth, PR coils are dumb coils. Meaning they still use the internal ignition drivers in the ecu. Have you looked into bimmerlife coils? They use Audi/vw coil packs which are smart coil packs, meaning the driver is integrated directly into the coil. This can take a load off the ecu. People go back and forth on them, but I love my bimmerlife kit. Plus OEM vw/Audi coils are cheap.

Last edited by trb1; 03-19-2021 at 06:55 AM..
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      03-19-2021, 07:02 AM   #15
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Quote:
Originally Posted by haaken675 View Post
Like the title says, are they worth the money? Running Pure 600's, downipes, intercooler, inlets/outlets, the works,,,

I am waiting on 2 step colder NGK's as I am getting missfires at higher gears under load. I am willing to bet i likely need new coils as well. I'm running MHD stage 2+ for reference.

Is it worth the moeny upgrading to these?
At 450 hp, no they are not worth it. You are better off with Eldor coils. They are good to 600hp.
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      03-19-2021, 07:04 AM   #16
Saif2018
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Originally Posted by mweisdorfer View Post
At 450 hp, no they are not worth it. You are better off with Eldor coils. They are good to 600hp.
How often do you replace the Eldor coils?
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      03-19-2021, 07:05 AM   #17
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Quote:
Originally Posted by Saif2018 View Post
Quote:
Originally Posted by mweisdorfer View Post
At 450 hp, no they are not worth it. You are better off with Eldor coils. They are good to 600hp.
How often do you replace the coils?
Me? Every 50,000 miles
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      03-19-2021, 08:04 AM   #18
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I got mine for $100 from someone with a blown motor. I'm mhd 2 plus. At my stage they make no difference they just last longer and look good under your hood
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      03-19-2021, 08:39 AM   #19
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Quote:
Originally Posted by mweisdorfer View Post
Me? Every 50,000 miles
Thanks mate, just wanted to get an idea, I don't want to wait for it to misfire before changing them.
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      03-19-2021, 09:04 AM   #20
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Quote:
Originally Posted by Saif2018 View Post
Quote:
Originally Posted by mweisdorfer View Post
Me? Every 50,000 miles
Thanks mate, just wanted to get an idea, I don't want to wait for it to misfire before changing them.
Eldor coils are pretty stout
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      03-19-2021, 09:25 AM   #21
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ELDOR COILS! ELDOR COILS! ELDOR COILS!

DOES IT GET ANY BETTER THAN ELDOR COILS???

I may lose my mind if I see another thread ruined by the constant Eldor coil infomercial. Weisdorfenshmirtz, are you getting a kick back for all these absurd endorsements?
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      03-19-2021, 10:45 AM   #22
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You need to get a custom tune, not sure why you would run an ots map with pure 600's.

It all depends on your tune. Some tuners like to make power by upping the boost with not a lot of timing advance and running bit rich to avoid detonation. Good tuners know how to balance timing advance and boost to get the most efficient power out of the engine. For example say on pure 600's you can probably hit 500 WHP 2 ways, 25 PSI and 5 degrees of timing, or 23 PSI with around 9 degrees of timing. Considering all things equal such as mods and octane.

To me running more advance timing allows the engine to be more efficient in power production as you typically can run a bit leaner compared to just upping the boost. So yes Eldor coils are good for around 600 WHP, but in my opinion probably not running a high degree of timing advance. It get's to a point with the "stock" style coils where it can't keep up with high amounts of timing and boost.

For refence I'm on stage 2's with PR coils on 95 octane, 21 PSI and 8 degrees of timing advance and dyno'd 482 WHP and 500 WTQ and according to my tuner there's still some room to grow, but I'd rather have some reliability and safety than push it to it's max limit. with eldor coils I started getting timing corrections around 8 degrees. In short for stock turbo's no PR coils are not worth it, for those with upgraded turbo's it all depends.

Last edited by ErvGotti; 03-19-2021 at 12:12 PM..
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