I'm doing a newage coilpack conversion on my Subaru classic and I'm looking at buying some surefire performance coilpacks but when I go onto there website there are 3 different types all at the same price.

can someone please guide me onto the correct set please.

http://www.surefireonline.co.uk/category-s/1864.htm

 

FK0140 for 2.0ltr
Either red or black,most go for the red.

Are you doing your own conversion or have you got the loom conversion leads?

 

What engine do you have?

 

Has anyone tested these back to back with OEM?

 

Nope but they are proven to work on big builds, ask Martyn he will confirm

 

I'm pretty sure I read a thread where Martyn did say the surefire had good results,he also said he had good results using cheap eBay specials on his big build

 

I don't know of any big builds with them in, know loads with Oem ones. Tried and tested.
Not saying there's anything wrong with them, far from it. Just curios as to why the majority of the big hitters don't run them

 

Maybe because they never generally go wrong type of attitude. Let's face it, they are not made like normal coils so less likely to fail, but for the cost of buying vs price of new they work the same, or maybe the red ones better, who knows as never been tested back to back I don't think.

 

Don't know if mine is considered "big" but they run perfectly in mine. Very smooth.

Martyn recommended them and has used them lots on high power builds

 

A little bit off topic, but I am currently converting my V5 with the surefire's and Jt loom, (which I have already bought) but my mapper is advising against it as the looms have been giving interference during mapping.

Has anybody else had this problem, I ask because I know there is a difference in the looms between versions and am hoping its confined to one not both hopefully not the V5.

(please don't ask the mappers name as I don't want to start anything, but he is well regarded in the scene)

 

No issues with mine and it's a V5

 

Well the mapper is crap then, as the v5 loom is literally pnp and no wiring up like pre V4 etc. So I find it astronomically hard he/she would say that, it's just a straight current.
With that advice it deserves the mappers name for others to avoid.
They are all 'apparently ' regarded on the scene
Maybe he don't like jti for some reason

 

Maybe, it is the early versions that have had the problem then and not the V5s.
I didn't ask what versions he had the problems with.

 

They should all be shielded and earthed on the shielding anyway, so I can't see how he can be getting interference.

I have fitted jti looms and they are very good quality and seemed appropriately shielded etc.

 

That doesn't mean he's any good.

Who's your mapper?

 

Like I said in my original post I am not naming and starting the big ScoobyNet bitching match which usually happens on here.
I was just trying to gather if it had happened to anybody on here and what version they have.

Just trust me in saying he is one of the best we have in the UK and not some guy who has just popped up overnight.

 

Obviously not one of the best we have in the UK then I guess

 

I hope it's not drunken

 

The looms don't give interference. The only instances of this are on AlcaTek ECUs due to a suspected design flaw withe that ECU...and we supply information on how to work around this issue by adding a new earth wire (on 1999-2000, V5/V6 as the others don't suffer this).

 

So will that info on adding the earth be in with the loom Tim? As I am away working so haven't opened my package yet.

 

Instructions in the kit, yep

 

Good to know thanks.

 

Tim don't leave nothing unturned.

 

Well, I try! And if we hit a problem, I work out what it is and update information or change the design

 

[QUOTE=ossett2k2;11916170]FK0140 for 2.0ltr
Either red or black,most go for the red.

ordered some fk0140 red coils as that is listed for a 53 plate sti but just pulled the old ones and there fk0186. Boots are slightly longer on the old fk0186. Is there much difference between them? Not sure if the old fk0186 coils are the standard ones or have been swapped at some point

 

From what I've read,the Fk0140 are wrx and fk0186 are STI which have different dwell time.
Always best to double check before ordering.

 

Yeah haha I was at work at the time and thought if I order them now I can fit them on my 4 off. Oops. Will exchange them.

 

There seems to be a bit of conflicting info on this tbh.
This thread post#10 would suggest Fk0186 are for the 2.5ltr

https://www.scoobynet.com/group-buys...group-buy.html

I have read that they are for 2.0ltr STI.
The ones which are in your car would suggest fk0186 are indeed for 2.0ltr cars lol
I think there is something like a 2ms dwell time difference between the WRX & STI.
Again,I don't speak from experience in using the different types but from the info I've read when looking to upgrade my v3 Classic to single coils.

 

Ej20 and ej25 are different lengths to accommodate spark plug lengths

 

there seems to be 2 for the ej20. The fk0186 (old ones) with the longer rubber fitted fine, but the fk0140 ones are about 15mm shorter