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Discussion Starter · #1 ·
Hi all,

I’ve just finished installing the 380cc JCW 210 injectors on my completely standard Cooper S 170. I read that they would run rich but be okay to run around on before I got my tune sorted. The car has a bit of a misfire and is far less responsive on the throttle with both the check engine and the hazard sign lights on the dash.

I’m pretty sure nothing has gone wrong with the install, I just wanted to make sure this is the case. Is it just because I haven’t got the tune yet?

Any help is appreciated!
 

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2005 R52 One Convertible (The Smoker)
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Worth getting the codes read, see what the issue is.

Could be that one of the injectors is bad.

I'm not sure 380s on the stock map will necessarily provide more fuel, without the fueling tables being changed either, though might be completely wrong.
 

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Did you resemble everything correctly?

Pull the intercooler off and make sure all the plugs are in connected properly.

Have you read the codes? If it's a particular cylinder that's misfiring, swap the injectors round and recheck the codes.

Could be a blocked or leaking injector.

Also check the vacuum line is connected to the fuel reg.
 

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Yeah you can run them on stock map, they are only a small amount bigger than standard and ecu is controlling flow, bigger ones just mean they can flow more but they arent just pissing out at idle.
My guess is one is dirty.
Trial putting one of your old ones back in and then move that one along 1 cyl at a time.
 

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No you can’t run them on a stock map, they will over fuel leading to boar wash etc. The ECU does not control/adjust flow on cold start, WOT and above 4000 rpm, so there is no compensation for the additional fuel.

Hey if you want to it’s up to you, but when it goes wrong those who said you could won’t be offering to pay.
 

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Hi all,

I’ve just finished installing the 380cc JCW 210 injectors on my completely standard Cooper S 170. I read that they would run rich but be okay to run around on before I got my tune sorted. The car has a bit of a misfire and is far less responsive on the throttle with both the check engine and the hazard sign lights on the dash.

I’m pretty sure nothing has gone wrong with the install, I just wanted to make sure this is the case. Is it just because I haven’t got the tune yet?

Any help is appreciated!
Pull the plugs and upload a picture of the colours.
 

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Discussion Starter · #8 ·
Worth getting the codes read, see what the issue is.

Could be that one of the injectors is bad.

I'm not sure 380s on the stock map will necessarily provide more fuel, without the fueling tables being changed either, though might be completely wrong.
All sorted now thanks. After switching the engine back on some minutes later it started up fine, no misfire and all the power is back! Must have just been whilst the fuel was making its way through the system!
 

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Discussion Starter · #9 ·
Yeah you can run them on stock map, they are only a small amount bigger than standard and ecu is controlling flow, bigger ones just mean they can flow more but they arent just pissing out at idle.
My guess is one is dirty.
Trial putting one of your old ones back in and then move that one along 1 cyl at a time.
Yeah they’re running fine now thanks. I’ve been told they’ll run a little rich but are fine to drive on before I get the JCW 210 file put on.
 

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Discussion Starter · #11 ·
Did you resemble everything correctly?

Pull the intercooler off and make sure all the plugs are in connected properly.

Have you read the codes? If it's a particular cylinder that's misfiring, swap the injectors round and recheck the codes.

Could be a blocked or leaking injector.

Also check the vacuum line is connected to the fuel reg.
It’s all fine now thanks. I’d bought some cheapo ones a couple of weeks ago and the dash was lit up like a Christmas tree. They subsequently came back out. Probably still lingering from them.

I started the engine back up 10 minutes or so later on the new genuine ones and all the power is back and running smooth.
 

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Discussion Starter · #13 ·
I guy I know has a tuning shop locally (Narco in Coventry). He specialises in VAG and BMW, a lot of diesel stuff but he writes files and sells to other shops around the UK, so a shop he deals with up north somewhere are R53 specialist guys so they'll be sending the file over to him. Failing that I'll get him to do a custom tune to get all the flow levels right.

I've heard they can do it at the dealers (Woolaston, Sytner, Rybrook, etc.) but all of those threads are some 10 plus years old so whether they still do it is doubtful.
 

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Discussion Starter · #14 ·
Where are you getting the 210 map loaded, just out of curiosity?
A guy I know has a tuning shop locally (Narco in Coventry). He specialises in VAG and BMW, a lot of diesel stuff but he writes files and sells to other shops around the UK, so a shop he deals with up north somewhere are R53 specialist guys so they'll be sending the file over to him. Failing that I'll get him to do a custom tune to get all the flow levels right.

I've heard they can do it at the dealers (Woolaston, Sytner, Rybrook, etc.) but all of those threads are some 10 plus years old so whether they still do it is doubtful.
 
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