Customer Reviews
A selection of reviews received from our customers.
These were either received as unsolicited emails or comments posted on other forums and websites.
Gordon P - Opel 2.4 GT - USA
Upgraded and modified 2 x Opel GT 2.4L vehicles based on custom manifolds and MaxxECU system
I now have both of my 2.4L Opel GTs running on your MaxxECU system. One has Charles Goin's manifold and one is running with an Opel 2.2L manifold.
Both run incredibly great! I've never heard Opel engines run that clean and smooth! Even my auto trannies run better than any that I have ever had.
I want to thank you from the bottom of my heart for the product you sell and the great tech support you have provided!
Jim Villers - President of the 190SL Enthusiast Group - USA
Mercedes 190SL Twin Weber DCOE to Classic Fuel Injection Conversion.
His interesting story of the full conversion process from carburettor to fuel injection.
Originally published in the Mercedes - Benz 190SL Enthusiast Group Magazine - Fall 2022 edition
( kind thanks given to the 190SL group for permission to re publish here )
Link to PDF copy of the article here - Mercedes-190SL-Fuel-Injection.pdf
Link to full PDF copy of the magazine here for those interested in these vehicles - Mercedes-190SL-Magazine-n2022-04-Fall
Robert – Citroen DS Semi Automatic
Replacing original Bosch EFI System with the 4 Injector Classic Fuel Injection conversion using on the MaxxECU system.Hi Kevin,
just to let you know it's bloody marvellous !!!
Works a treat, so I can now do the hydraulic adjustments to match.
I've also tweaked the accelerator enrichment and the dead spots have more or less gone too.
So as far as I'm concerned I'm almost there. Slight cold start problem but it's just a small adjustment.
Many thanks again for all your help.
James – Fiat Panda Track Car
4 Injector and Wasted Spark Coils using the Classic Fuel Injection conversion based on the MaxxECU system.
Thank you for supplying quality parts and your help in settling up the Panda pick-up's injection.
With
your system and a few other suspension parts we took over 45 seconds
of our lap time at Goodwood Spring Sprint. Super awesome, way better
than I'd hoped for.
The Panda beat two Arbaths, a Lancia and Porsche. Among a few others.
Many thanks
James
James – Austin Healey 3000 with BJ8 Triple Carburettors
3 Injector Premium kit using the Classic Fuel Injection conversion based on the Dynamic EFI ECU systemGreat
results - car starts up from dead cold with a push of the starter
button without even having to press the gas pedal. Idles really well,
loads of power, and really smooth acceleration. These are the results I
was expecting.
I’ll drive it for a while and report back if there are any further developments, but it seems as though it’s been a success.
Regards.
James
Grant – Triumph Spitfire with twin SU Carburettors
2 Injector Premium kit using the Classic Fuel Injection conversion based on the Dynamic EFI ECU system( Comment posted by Grant on the triumphexp.com/forum )
This
was my winter project which I finished and took for a drive yesterday.
An EFI system from Classic Fuel Injection Ltd. I did it mainly because I
could never get those SUs tuned properly and wanted the reliability of
an EFI system. I was expecting a bit more power but this has far
surpassed all my expectations. The kit was so easy to fit, it self
learns with a laptop connected and has given a real boost to performance
right through the rev range.
John – Triumph TR6 with original Lucas PI System
Replacing original Lucas PI System with the 6 Injector Classic Fuel Injection conversion based on the Dynamic EFI ECU system( Comment posted by John on the tr-register.co.uk forum )
Hi Guys
Here is an update on my conversion EFI.
Just completed 1450 mile tour to Ireland with an average fuel consumption of just over 31 mpg.
The tuning of the software ,with the help of Kevin at Classic Car Injection was pretty straight forward.
My car starts and runs like a modern car, with much improved fuel consumption
If anybody wishes to do this conversion, I can fully recommend this company.
James – Jaguar Mk2 240 with Twin Carburettors
2 Injector Premium kit using the Classic Fuel Injection conversion based on the Dynamic EFI ECU system( comment posted by James on forums.jag-lovers.com )
I
have fitted a “Classic fuel injection ltd” system to my 1968 mk2/240
it’s my first weekend out, and having driven 300kms i can tell you it
makes your pussy purr like a very content cat.
I will always be
disadvantaged due small engine size but the gains in smoothness pull off
and high speed [running 5 speed w58 box] and everything else made the
leap to EFI well worth it, I’m booked for the rolling road next month. I
think I may not need it as the system has wide band O2 and learns
itself. The simple thing about it is just fit the mounting blocks
between the carb and inlet manifold. Longer studs are required for
fitment and an extra inch distance for air box to move away from engine.
Take a look on the site it show a xj6 fitment with SU’s. Kevin is a
great guy and very helpful. This option is so much cheaper to buy and
very easy to fit. no more smell of petrol yay, no problem parking on
hills and no hunting other parts etc.
We asked Duck.ai to find " Reviews of Classic Fuel Injection Systems "
( response as of 19 March 2026 returned by Duck.ai using GPT-40 mini )
Summary of User Experiences
| Review Source |
Key Points |
User Sentiment |
| E Type Forum |
A user installed a 12-injector system on a Jaguar V12, noting significant performance improvement and resolution of fuel smell issues. The system is programmable and self-learning. |
Highly Positive - Improved performance and no more fuel odors. |
| Spitfire & GT6 Forum |
A classic Spitfire owner found the EFI system easy to install and noted substantial power gains. Self-learning features enhance performance across the rev range. |
Very Positive - Surpassed expectations in tuning and engine response. |
| MGB & GT Forum |
Some users appreciated the system but expressed concerns about originality. One user felt it provided only marginal improvements over properly tuned carbs. |
Mixed - Some criticize the originality aspect; others recognize reliability benefits. |
| TR6 Forum |
Users shared experiences regarding a conversion using original SU carbs as throttle bodies. Inquiry about installation assistance received positive support from the manufacturer. |
Positive - Good support and customer service noted. |
| Art of Gears |
Discussed various aftermarket EFI kits. Highlighted ease of installation and overall performance enhancements. Noted significant improvements in fuel efficiency. |
Positive - Installation straightforward; concerns about needing specific computer interfaces for tuning mentioned. |
Detailed Insights from Users
Performance Improvements
- Significant Power Boost: Users report better throttle response and performance throughout the rev range after switching to EFI. The self-learning capabilities allow for automatic adjustments based on engine conditions, providing consistent power delivery and efficiency.
- Increase in Fuel Efficiency: Many users noted improvements in fuel mileage, with reports of gains of up to 11% following the installation of EFI systems.
Installation and Ease of Use
- User-Friendly Kits: Several users highlighted how straightforward the installation process was for their specific vehicles. Complete kits often come with the necessary components, including wiring, sensors, and support for DIY installation.
- Technical Support: Many reports featured improved customer support from manufacturers like Classic Fuel Injection, making it easier for enthusiasts to navigate challenges during installation.
Originality Concerns
Some classic car enthusiasts express mixed feelings due to concerns over maintaining originality. The shift from carburetors to EFI is seen by some as detracting from the classic allure of their vehicles, though many agree that performance and reliability often outweigh these concerns.
Final Thoughts
The move to classic fuel injection systems appears to be a favorable upgrade for many vintage vehicle owners. While some concerns regarding originality remain, the performance enhancements, reliability, and ease of installation make these systems appealing for those looking to enjoy their classics with modern convenience.
If you have more specific experiences or questions about a particular setup, feel free to share!