We are proud to introduce the first injectors with OEM nozzles that have correct spray patterns for the MINI's head. These injectors are manufactured by Bosch and flow 380cc/min., and have 15% dual cone spray pattern.



Why a twin cone pattern? because the engineers at MINI designed the OEM injectors to flow directly at the intake valves, not at the central bridge. Here's a shot of the intake ports of a MINI head. Sorry for the photography and file size...



The above picture shows a stock MINI intake port in detail. A central bridge is clearly visible. This is where the main inlet port becomes split to direct air (and fuel) towards the intake valves. The correct injector type for this inlet configuration is one where the injector nozzle sprays a precisely split amount of fuel directly into each port and onto the back of each intake valve. An injector that sprays a single narrow fuel cone will wet the metal walls and causes fuel to dribble into the combustion chamber. Tuning/holding precise air/fuel ratios is thusly complicated.

Here's a rather out-of-focus clip of a single stream, aftermarket injector's spray pattern (no worries, I made the clip short):

http://helix13.com/pics/380ccinj.wmv

Now here's a clip of the new helix 15% split stream injectors:

http://helix13.com/pics/helixbadassinj.wmv

We have these injectors in stock, and ready to ship for $360 per set. Please don't hesitate to call or email if you have questions.

 

Eric,

Do the JCW injectors have a single cone? Also, have you had the opportunity to compare (power, etc.) your new injectors and the JCW's? Thanks...

 

Eric;
At what performance level do you feel these will be most effective?

I'm around 185 whp. Good.... no good.

Your thoughts please.

Impact on fuel efficiency as well.

 

Both the JCW and Stock MCS injectors have twin cone delivery. In our comparison to JCW and other injectors, we have focused upon reliability, good low-rpm idling, and DTC free daily driving. The next step is indeed to test for power advantages compared to other injectors out there. I have one common aftermarket 380 here, and would like to compare it to JCW injectors as well. Anybody have a set of JCWs lying around that they can lend me for a couple of days?

These injectors are the ideal size for pulleyed cars: you will never run out of injector, even at 7500rpm and a 19% pulley, and it's fuel delivery and spray pattern is such that it will idle perfectly. Proper tuning is recommended.

 

I believe that the M7 400cc injectors use the same "twin cone" configuration, too...

 

Well ...Questions do come to mind

What are the M7 injectors at 400 cc ? Single or split?

What are the Madness 380 cc injectors ? Single or split ?

 

Uh? Splain proper tuning please.
ECU mods maybe?

 

Eric, these are the same exact ones on mine correct?

 

yeh i think he means ECU tuning

 

unlikely if they are re-drilled injectors.

 

"Injectors are rebuilt OEM injectors, so they maintain the fantastic OEM fuel spray pattern, ensuring thorough fuel atomization for a clean burn, unlike many other OEM and aftermarket "squirting" injectors."

http://m7tuning.com/main.m7/store/10019

I've seen them up close and inspected them, before installing mine. They did not seem "re-drilled." They seemed re-valved, maybe. Anyways, they work and they retain the stock spraying pattern .

 

Fair enough. Glad you've had good results with those

 

Here's a clip of the stocker for comparison:

http://helix13.com/pics/mini_small2.wmv

The JCW looks very similar.

With tuning I mean that the proper way to run bigger injectors is to have the ECU tuned specifically for those injectors. If you just put 380s in your car, it will run, but you are leaving power and fuel efficiency on the table. The bigger you go with injectors, the worse it gets.

 

I can provide excellent instalation and give your car the Flame appeal!!!

 

yowch. That stings.

 

Good deal. I did some combustion research on injector placement a while back. Hitting the back of the valve is best for fuel atomization. Even if you're squirting enough fuel that it puddles behind the valve, when the valve opens the heat from the exhaust stroke will help to atomize the fuel and mix it up again. The result will a better atomized intake charge with a more homogenous mixture. Theoretically, there should be a increase in mileage due to a more complete burn. Nice job.

 

This is a subjective observation, but it seems to me that the stock injectors do a better job atomizing the petrol into a fine mist as opposed to the Helix/Bosch ones, which tend to direct the fuel out in two misty jets.

I'm planning on purchasing some 380cc+ injectors by mid-June, so a comparison between the Helix 380cc, JCW 380cc, and M7 400cc would be particularly helpful.

 

We played with the center stream injectors and found that in rare circumstances the car would throw a rich code DTC under closed loop operation. It was pretty random: medium RPM cruising at about 55mph in '05/06 cars. We played with the tuning but couldn't solve it, so after talking to injector experts and scouring the globe, we finally found the right ones. Interestingly, in our talking to various experts, we discovered that there are two schools of thought that injector pros fall into: either the 'the stream must be fully atomized from the nozzle' group, and the 'atomization occurs when the stream hits the back of the valve' group. As is so often true with tuners, what I say is right and whatever anybody else says is wrong. Sound familiar?

 

Why whatever are you talking about?

Looks like you added something else to my wish list. Gee thanks

 

Sorry, a third rate attempt at humor

 

Well, obviously my attempt at humor sucked more

I was joking about the accuracy of what you had said. It was supposed to be "tongue in cheek". Ended up more "foot in mouth"

I'm definitely wanting the injectors. It'll just be a while. Need to plan for an ECU chip mod at the same time.
And then there's those pesky, family, food, responsibility things getting in the way


How about the battery there fella?

 

I realized that after I posted it, sticking to my standard M.O. of posting before I think. This way my dim wit will not only go to posterity in memory, but also in writing.

 

Enough self deprecation . People make mistakes.

 

Most newer cars operate under the back of the valve theory but the atomized from the injector was the way to go with things like TBI. The problem with atomizing fuel that far away from the valve is that the high speeds in the intake system seperates the fuel suspended in the flow and the fuel ends up on the walls.

Direct injection is quickly making all this irrelevant anyhow.

 

Hi Randy, you keep giving us so many new choices to make... so if I have a 15% pulley, opened up air box with drop in foam filter, and your ignition upgrade, should I next go with an improved exhaust or these injectors? How essential would an ECU re-map be at this stage?

My prime motivation is to increase useful (daily driving) power without sacrificing fuel mileage.

Cheers,