The Future of Classic Minis - Bolt on Fuel Injection

[@nothingsurprisesmeanymore]

I just brought my mini back home from my parents house, it was my first car, I got it when I was 16 back in the 90's it's been sat under a cover since 1997 so it's going to be quite the project to get back on the road. I've only recently discovered your channel but thank you for making it as I have forgotten so much. I've already spent thousands in my head on upgrades 😬

[@classicminidiy]

Oh man I love a Mini with a history. So glad its getting back on the road and you are the one who gets to do it. Best of luck with the project and hope the throttle body finds its way to your engine :-D

[@GTE_Channel]

My advice is to spend the cash in your head on needed repairs to get a good and save road going Mini, and save the upgrades for when it's done and you can actually drive it. Restorations cost more than you initially anticipated! Good luck!

[@kellygiddens3356]

Now this is something that can be used on many of the classic engines, going to keep watching closely!!!

[@greatbritannialine]

As an owner of an spi this is literally absolutely brilliant and perfect. yes yes yes!

[@JD0x0]

Very cool! If someone were to upgrade their SPI, would this be able to plug N' play on the stock ECU without issues (Assuming you're keeping the power moderate enough for the stock ECU to compensate)?

[@matthewclarkson4883]

Sure excited for this Cole, legendary that you’re solving a real issue that we’ve had in the mini community for a while now. Unfortunately I can’t help but wish it had come out sooner and saved me some work, but super excited to hopefully see wide adoption from others. Who knows as well, I may well end up picking one up in the future as an upgrade over my mish-mash set up that you’ve seen is currently on the car. All the best and awesome work, Matt

[@classicminidiy]

Thank you Matthew! Hopefully it finds its way to your engine in the very near future. :-)

[@user-du8cs8sn2v]

I think it would be great if you did a video explaining the issues of injecting the Siamese port head and how this product can be used to negate the problems.

[@chrispadfield6169]

Would be great to see a video installing this on a N/A engine replacing an hif44, comparing the benifits. Looks awesome 👌 👏

[@classicminidiy]

Thank you! I would love to do a video on that. If youre near Charlotte, NC and want the work done I could do a video on your car. :-)

[@texburns242]

Another question. Could you have 2 throttle bodies like twin carb or will that not be nessasary

[@grayfool]

Love it.

[@Thecarislife]

Amazing. Nice work cole

[@SunnyMiniuk]

Looking forward to see how it performs

[@MrGadgetMotorCo]

Great invention Cole

[@richieward6348]

How did these do have you had much feed back

[@hosrow]

Hi Cole. Great intro. Struggling to find my hif44 carb for a long time, i recently trailered it to Vancouver, Canada to have it tuned by great people at Steveston Motor Company. Wow, what a difference. The car is currently running very well, so my question is what is the benefit for me to convert to this new throttle body and ecu which i suspect would require upgrading the fuel system and whatever else I need. I am looking for the cost/benefit ratio. What would you say is the cost for all that I need for the conversion, and what is the benefit after the upgrade?

[@leeedwards7721]

Hi Bud, Check out JET-MOTORS [US] For Conversions they do an BOLT-ON Turbo KIT you can do at home [That was their goal] Also check out Specialist Components [UK] For some real Trick stuff also do Forced induction with Rotrex Supercharger [Raise Alternator] As the super-Charger fits underneath. Really good Fair ££ package. Having an EFI Conversion [as to an Carb] Means you ONLY Tune ONCE, But also with the ECU if you upgrade your engine that EFI Will Fit [Maybe change Injectors] But these new EFI Throttle body KITS [PLUG N PLAY] Are brilliant. No more downtime with Jets/Clogging/Re-Setting etc.

[@ToddDunning]

The pain of waiting for this episode is over

[@classicminidiy]

Finally!!! 😂😎

[@luizf.1692]

Have a Spi. Not happy. If I replace all actual injector body, hoses, etc. and buying the HIF 44 manifold 1) can I use the same ECU? 2) Will be easy to adjust the engine flow to pass the technical control below 0.5%Co? Sensors? How many and where? Easy to install? Thanks in advance.

[@ToddDunning]

Down here in Cali Nick Upton (Boot2Bonnet) is set up to dyno and tune the SC 5-port EFI so I assume it would not be a huge leap to do the Haltech and your TB? Or are we not limited to the Haltech....minisquirt etc..?

[@classicminidiy]

Absolutely not a huge leap at all. This throttle body is totally agnostic of the ECU. So as long as your ECU accepts a 3 wire throttle position sensor it will work with it. You can pair the injectors that suit your setup with it and bobs your uncle! I wouldn't be surprised if Nick finds it much MUCH easier to tune than the SC setup. Apparently their ECU software has its challenges.

[@ToddDunning]

@@classicminidiy yes, I've heard the same from a couple friends with the S/C.... a real struggle. Since I'm buying an EFI next month (maybe yours) would you mind doing an episode with an Ahem cheaper ECU?

[@classicminidiy]

Sorry I'm of the "go big or go home" mentality. One does not simply return a Haltech ECU hahaha. Straight up though you can do the whole install with just the ECU and no PD16 PDM and you would be perfect!

[@chelee6302]

@@ToddDunning Yout might want to take a look of Speeduino, its a open source ECU that based on the Arduino board, you can get them relatively cheap ($200 under) and many classic mini owners have run them very nicely.

[@rennkafer13]

@@chelee6302 That would be my recommendation as well, Speeduino is the new successor to Megasquirt for cheap but completely functional aftermarket ECU's.

[@morgansundblad7117]

I need that for mine

[@nelsonayandaxaba8051]

Oyi mate I’m based in South Africa Soweto, how much will it be to ship thee gadget 😊 to RSA ?

[@classicminidiy]

Hey Nelson! It’s $35 to ship to South Africa. 👍🏼

[@SoLDMG]

This is awesome. Recently I’ve seen a lot of bits of my unplanned dream build just fall into place… A sign from the Mini gods perhaps?

[@classicminidiy]

Follow the signs!!!

[@andrewf8486]

I like the idea, but like most throttle body injection systems out there it will have the same issues as a carb at low engine temps and low manifold velocities. The fuel will wet the walls leading to fuel inconsistencies. I’d like to see a manifold with the injectors near the intake valves. Don’t get me wrong it will be better than a carb for efficiency, but it would be better with the injectors near the valve. One other note you don’t need the throttle position sensor if you may your fuel in speed density. You could simplify this part and maybe cut a couple dollars out of it if you sold it separately.

[@classicminidiy]

Manifolds with the injectors closer to the inlet valves on a Siamese engine like this one cause port robbing much worse than fueling up at the throttle body unfortunately. The only way to get EFI working on the OG A-Series really well is simulating the wet manifold config that a carb does out of the box. I personally prefer my fueling in volumetric efficiency as I find it more intuitive while tuning. In a perfect world I could do individual port injection on a crossflow head. Something we are exploring selling options for in the future.

[@jasoncurry2906]

How much testing has been done with this? Do you need to add a idle control valve ?

[@classicminidiy]

We have tested this extensively on NA engines and some turbo configurations. The key to it running nicely is making sure you have the right injectors for your configuration. An Idle Air Control valve isn't required however I will be installing one with my setup and covering that in upcoming videos. :-D

[@raymondjlawsoniii1509]

I'm a little bit confused. The video says $450.00 but the website says $500.00. ?? The video also says 2 choices: boost flange or NA, K&N flange, but the website only shows boosted. ?? Please clarify. Thanks for doing this!

[@classicminidiy]

Hey Raymond. The $450 price was a super early bird special that’s ended now. I didn’t make that super clear in my video. Regarding the flange options I double checked and the site’s drop down shows no flange, KN, and boosted. If you are still running into issues shoot me an email at [e-mail] and I can help you out.

[@agustinbianchi4760]

I really like it but price has sky rocketed since this video, I would pay the 450 announced here, but now the price is 630 with discount applied! product seems exciting but will look for other throttle bodies and see if there can be some modifications to do.

[@classicminidiy]

I know 😔 it’s been really hard to keep the prices down with shipping, materials and production since this came out. It really is super frustrating. I’m hoping I can bring the price back down in the future

[@agustinbianchi4760]

@@classicminidiy okay thanks for the answer, I will try making a diy kit down here using a speeduino and try to make it much cheaper, will let you know, regards!

[@patadamson4005]

How do you think this would go paired up as twins on a B series 1800 Cole?

[@classicminidiy]

We haven't run them in a twin configuration before but with some work you may be able to do it using a custom throttle actuator of some sort. (maybe similar to the way webers work?) As long as they mount up to the flange properly, make a nice seal, and you find the right injectors I don't see why not. The factory inlet manifolds on those likely dont have the correct pattern though.

[@patadamson4005]

@@classicminidiy I actually have an alloy lynx manifold with the square 1 3/4 flange, so it literally looks like it would bolt on. I suspect that something could be done to remove a tps and link between the throttles similar to twin SU’s?

[@jasonswan9183]

How are you going for shipping to Australia?

[@classicminidiy]

Cost ranges from $35-60 depending on the speed you choose.

[@jimf5160]

is there a two barrel version?

[@classicminidiy]

Currently there is not but It's something I would love to offer in the future. Wanted to start with a direct bolt on and then move into one that could live on a weber intake manifold in the future.

[@murty4471]

@@classicminidiy I've heard that you start running into the siamese port robbing issues if you try and inject each port individually (without clever ECU code to time the pulses exactly). The single SU throttle body is effectively a "wet" manifold and that's why it works OK.

[@classicminidiy]

This is very true. The best solution for an a-series is always going to be a cross flow setup with the inlets on the front. With the single throttle body on the back you have to pulse the 2 injectors as a batch twice each engine revolution, 180 degs out.

[@murty4471]

@@classicminidiy correct, one injector is wired for cylinders 1 & 4, and the other injector is wired for cylinders 2 & 3, so that for a firing order of 1-3-4-2, the injectors alternate 180 crank degrees apart to keep the manifold wet.

[@classicminidiy]

Either that or you can batch fire both at a lower rate twice per cycle. It boils down to the injectors and their flow rate.

[@leeedwards7721]

Specialist Components Also do this Kit [Their Version] And JET-MOTORS [US] Do an BOLT ON Turbo Kit [NO ECU] Straight onto Carb. I;m giving serious thought of getting rid of my VW Polo GTI to help fund a NEW Mini project, I;m Going from A series with SC Twin-Cam Conversion to going FULL Honda V-TEC B18 but with a ClubMan Front-End so maybe an Forced induction. I grew up building minis @ just 14 in South Wales [UK] and getting Minis to Run for other people. I built and Raced my 1275GT @ just 18 and won my 1st Ever Race/Class.So now i;m 51 [Mobile Crane Operator] Things are OK [£££] So a very NICE Mini [Fast-Road] would get me going again.

[@Dagowly83]

But the jet motors kit is shite.

[@murty4471]

What makes this throttle body different to the Specialist Components throttle body? I've used the SC version with reasonable results.

[@classicminidiy]

They are functionally similar and performance will be the same. The goal here is to offer something of the same quality but at a more affordable price bracket. So this unit is essentially their "full assembly" option minus injectors.

[@murty4471]

@@classicminidiy thanks. Yeah, with the current exchange rate theirs is around $530 USD but like you say they don't give the ram pipe or filter backplate at that price. Great to see a competing product at a great price. The Haltech ECU you are using is going to be far superior to the SCS D400 ECU that SC provide (I couldn't get the transient fuelling to work very well when the throttle was depressed slowly, and I suspect that's the problem with their ECU). I gave up in the end and decided to fit an Arden 8-port head on injection.

[@meanmachine7107]

I have the SC throttle body with the SCS Delta 400 on my mini. It was an absolute pain in the arse to get going and still requires constant fettling to get the car though MOT's every year. I too couldn't get the transient fuelling to work very well. Also the SCS Delta 400 doesn't play nice with the newer Bosch narrow band O2 sensors, so if you have to replace your NB O2 sensor look out. I had to create a buffer circuit between the ECU and the O2 sensor as the input impedance of the ECU NB O2 input is too low for the lower quality modern sensors (compared to 25 years ago for the OEM narrowband sensor). The wideband closed loop control seems to be impossible to optimise and always gets into rev oscillations at various points in the rev range, ends up being a game of 'Whack a Mole'. The guys at SCS are super helpful but they could do with listening to the feedback in respect to the mini use case. The SC/SCS basically operates as an ECU controlled wet carburettor and ignition. Am seriously considering changing to Col's solution.

[@murty4471]

@@meanmachine7107 Unfortunately the Siamese port robbing issue will always be there with this single throttle body approach and the injectors in the throttle body (same port robbing issue with carbs). The only way around that is to fit a cam sensor and put the injectors in the intake manifold at the port like the MPi mini. Then, very carefully time the injection point of the inner cylinders versus outer cylinders (quite involved). The other option is to go for an 8-port or 7-port cylinder head. I opted for an Arden 8-port head. I'm also ditching the horrible SCS Delta 400 and going with Haltech.

[@phxsteele]

I have an 83 1275. Looks like a good mod for reliably. Where can I find more info on ecu cost, fuel pump requirements, etc to complete the swap?

[@classicminidiy]

So for now I am just selling the throttle body but I am going to be doing the conversion on my car to show the process. The ECU I am using is the Haltech 750 Elite but I will be covering the rest of the details in upcoming videos. :-)

[@robpriddy2372]

And I JUST bought a brand new hif44 for a 1098 project…will the pre-order price be good through the other videos of discovering what works? Will megasquirt work?

[@classicminidiy]

Hey Rob, the pre-order price will be going on for the next two weeks until we start fullfilling orders. Then it moves into standard pricing which we expect to be around $50-$100 dollars more depending on the configuration.

[@robpriddy2372]

@@classicminidiy Will there be preorders for the 38mm variant?

[@colinu2]

Will pre-orders be available for sizes other than 45mm?

[@classicminidiy]

Yes when we get closer to their release we will open preorders for those as well. Those are still looking like 4-6 weeks for production so I didn’t want to make people wait with open orders for too long.

[@mrennick]

Wow! Super cool to see. Way to go Cole!

[@classicminidiy]

Thank you! I really appreciate it.

[@davidwallis8978]

What size is the throttle body? 50mm?

[@classicminidiy]

We offer them in 38mm, 45mm and 50mm. The one in my video is 45mm.

[@Mr_Fabulous]

@@classicminidiy what size throttle body would you use on a NA 998 bored out to 1030?

[@classicminidiy]

I would stick with the 38mm or the 45mm. It likely wont see any performance improvement with the 45 but our 38's wont be on sale for another 4-6 weeks.

[@christophersherrington5412]

Isn't that a knock off of the Specialist components 5 port EFI kit.

[@classicminidiy]

No we designed ours from scratch in both this model and a drive by wire variant. The only similarity between them is the engine applications they are used on. We offer different injector length options as well that SC doesn’t accomodate.

[@alvindeleon6080]

Hi will this work with an A/C set up?

[@classicminidiy]

I don’t see why not. It looks like the AC minis were mostly SPI engines so it would need a new inlet manifold to bolt on and then of course the ECU work and wiring.

[@bb590]

Works with an austin sprite?

[@classicminidiy]

Looks like the sprite used mostly an inline a series so that shouldn’t be any issue. It didn’t originally come with an HIF44 though so you’ll likely need a new inlet manifold to suit our throttle body

[@Sally-nd5pc]

Hi, could you help check your inbox on IG or email?