Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: Has anyone tried 34lb/hr injectors?

Why take the chance, get the JCW injectors.

 

The stock tune can adjust to the 380's, but to get the full advantage of them and the rest of the parts a tune would be needed to optimize them.

I ran the 380's w/o a tune for about 4 months till my tune with no issues.

 

Are you speaking of the ones on EBAY ?

 

If they are only 380's they are too small for me.

450's or 550's scaled correctly would be much better.

 

Good point the JCW's are 380's also.

 

Go JCW injectors they are reliable and fit perfect.

 

Do you think running larger injectors without a tune is a good idea?

 

380's with a 15% pulley, cat back and CAI has proven time and time that it works. Larger than that and a tune is called for.

 

I thought a tune was called for. The factory R53, with about the same parts got one. I read somewhere that without a tune the injectors were a waste of money & fuel. Wish I could remember where I read that. Maybe one of our tuners can chime in & give us the skinny on this.

 

I did the same thing until my tune day and then I popped in my 450's.

 

I ran jcw380's no tune for a bit....
The computer will use the longterm fuel trims to adjust fuel flows for cruise, and light accleration with info from the o2 sensor....but will run using the maps WOT.
with a 17% and jcw380's, the car ran good, no power loss like some compain about from being ivetly rich with 15% and JCW 380's....
But post tune, car did run better, and gained more power. The AFR'S with the 17% and JCW's wern't perfect, but were actually pretty good wot according to jan, but he prefers to tune 15% cause they often make more power at the topend....but as a daily driver, the 17% is perfect for my style.
Back to the op's...pretty sure you will need to get adaptors to plug into the harness, and check the spraypattern ....stock/JCW is a "dual cone" spray...imo just pay the $$ and get jcw ones...they are proven, fit fine....and a tune WILL make the change even more costeffective.

 

Are you sure it will be compatable with the MINI harness?

 

Injectors are sold as both high and low impedance...
not sure which ones the gen1 mini has, but the voltages, etc specs must be around.
Since electronics and electrical parts are usually a no return item, i would be 100% sure they match up with the mini specs before spending $$ on then....and that they will PHYSICALLY FIT LENGTHWISE under the ic....AND you can get the adaptor harness you need.....
Shops that have done all this work then usually sell them.....a few shops were selling compatible injectirs for a bit, but they seem to have mostly stopped.

 

One more tip....the jcw flash is for a PORTED head....not much, but still done....with different pulley size than you run...so not a perfect solution....a canned tune from waymotorworks or another 3rd party will likly get you better bang for the $$$.

 

Question: What benefit, if any, would JCW 380 injectors provide? I understand they are "plug and Play."

2006 R52 with Madness Performance II package Including (15% pulley, CAI, Evotech ECU tune, DOS Copper Intercooler, and Borla Street CatBack).

Car runs great - never had a "code" but more power is always welcome.

Madness says stock injectors do everything needed for street and that there is NO BENEFIT from JCW 380's. Can anyone comment whether the power curve would be different from 2,000 to 6,800 RPM under Sprited street driving? Anybody dyno before and after?

Thanks!

 

The thing you will notice the most is more low end torque.

From the list of mods you have I would suggest a new tune, be it a JCW tune or a canned tune you will see improvement.

 

Yea, that Evo tune is worthless. Lots of evidence that it really doesn't do anything to the fuel trims.

 

The benefit...
lets put it THIS way...
In 2005 MINI/BMW decided the JCW380's were NEEDED to make more than 200 hp with the stock JCW tune....so in went 380's, and they could get 210 (with a cai).
if the factory engineers said they were needed, and you are running a more aggressive pulley than a jcw, and want to make SAFE power with good safe (similar to factor airfuel ratio's), they are needed....
if you are willing to push the limits of safe afr's...run a bit leaner, maybe burn a valve...go for it.
The cars computer adjusts a few things to try to keep the motor safe...on hot days the computer can run a richer mixture to compensate for hot intake temps....by all accounts the injectors in the S are running about the max duration/duty cycle, more than that with a pulley.....
I play it safe ...so i got 380's...then got a tune...and requested a good, safe tune....car runs great, reliable....no issues with different outside temps or seasonal fuel changes...is much more refined, smoother after the tune...
One thing that I noticed with the 380's, my starts with e10 fuel were as good as they were (and all driving/running) as the pre e10 days, when mtbe or nothing was added to fuel....e10 DOES need extra volume to make up for lower btu content...so it makes the duty cycle worse.
I was told I left some power "on the table" so to speak...at the tune if i had gone bigger on injectors, i could have made more, but my hp was limited by my afr's. But the JCW's plus is, if i ever "loose my tune" the car will still run fine with a stock flash....and 200hp is great in a S....heck i still have the stock exhaust (long story....never even got a one ball).