# 99 convertible - fitting a 225 engine **URL:** \ **Category:** Modern project threads\ **Tags:** megane-225, engine, 225-ecu\ **Created:** [June 25, 2022, 5:28pm UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729 "2022-06-25T17:28:45Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![CSR](https://turborenault.co.uk/letter_avatar_proxy/v4/letter/c/b5e925/32.png) [@CSR](https://turborenault.co.uk/u/CSR)\ **Post date:** [June 25, 2022, 5:28pm UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/1 "2022-06-25T17:28:45Z")
Not sure if this is the right place but here goes anyway Hi - I joined to learn about the Megane 225 engine management Have a 99 convertible in Yellow with Blue leather - engine is the 2 litre 16v - looking at the 225 engine It already has Brembo’s on 325 discs up front and 253 vented rears Have coilovers on the front and made spacers to lower the rear Plain 5 spoke 17" wheels Also has a “road box” in place of rear seat and a quality stereo Started to look at Vauxhall or Saab turbo engines as the 225 seems hard to come by but Might have found something The big question with all the modern ecu’s is the integration with other stuff like the dash Which is not helpful ~ is this the case with the 225? Would have to go stand alone ecu with the GM engines ~ hoping to avoid that if possible I have quite good facilities and experience but can always learn more Pretty much retired now so have time too All help and advice gratefully received Regards Neil ---
**Author:** ![Brigsy](https://turborenault.co.uk/user_avatar/turborenault.co.uk/brigsy/32/43_2.png) [@Brigsy](https://turborenault.co.uk/u/Brigsy)\ **Post date:** [June 26, 2022, 9:11am UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/2 "2022-06-26T09:11:08Z")
If you want to use oem megane ecu then you will have the headache of using an immobiliser emulator. As far as i know the mk1 megane is pre canbus then gettting the oem dash working ok is not a problem regardless of ecu used. What are your goals power wise and what are you planning to use it for. I think you would benefit from a good standalone ecu regardless of what engine you use. Saab is an excellent choice but fabrication needed and tall engine so may cause issues. Megane 225 will fit in easier and easy to find usually but if overall power is your goal then you will need to use the stronger 6 speed gearbox which needs fabrication to fit. Vag 20vt is also another option. ---
**Author:** ![CSR](https://turborenault.co.uk/letter_avatar_proxy/v4/letter/c/b5e925/32.png) [@CSR](https://turborenault.co.uk/u/CSR)\ **Post date:** [June 26, 2022, 5:25pm UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/3 "2022-06-26T17:25:04Z")
I’m not looking to go mad with this - just think a little over 200 turbo horses will be way more fun than the stock 150 it has now. If I get the 225, think I would just leave it as is - so no messing with re-maps etc If it’s just a chip key - can work with that but dash and body module is more of a problem I’ve been restoring vintage Bentley’s for the last 20 years or there abouts so fabrication is not a problem. Have a spot welder - plasma cutter - nice tube bender - welder etc so there isn’t much I can’t do ---
**Author:** ![Neal\_R19](https://turborenault.co.uk/user_avatar/turborenault.co.uk/neal_r19/32/445_2.png) [@Neal\_R19](https://turborenault.co.uk/u/Neal_R19)\ **Post date:** [June 26, 2022, 6:36pm UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/4 "2022-06-26T18:36:08Z")
@binge has done exactly what you’re proposing ---
**Author:** ![CSR](https://turborenault.co.uk/letter_avatar_proxy/v4/letter/c/b5e925/32.png) [@CSR](https://turborenault.co.uk/u/CSR)\ **Post date:** [June 27, 2022, 8:02am UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/5 "2022-06-27T08:02:54Z")
I tried to buy a car on ebay but something went wrong - bid didn’t register and it’s not the first time. Can only assume I left it too late and the net was slow for some reason Might have to shelve this for now as my offer on another Jag XJR engine was accepted I have a 53 Ford F100 pickup to restore hense the V8 - so will need to make some time for that when the engine turns up Can i find “Brigsy” on here or some project info maybe? ---
**Author:** ![CSR](https://turborenault.co.uk/letter_avatar_proxy/v4/letter/c/b5e925/32.png) [@CSR](https://turborenault.co.uk/u/CSR)\ **Post date:** [June 27, 2022, 6:29pm UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/6 "2022-06-27T18:29:02Z")
As you can see - standing around has not done it any favours. Lacquer is peeling and the discs are so rusty, they need replacing ![DSCF6022.webp](https://turborenault.co.uk/uploads/default/original/3X/6/3/63dc0e471f2d6d57fac212a60e790337b2fd38d6.webp) ![DSCF6021.webp](https://turborenault.co.uk/uploads/default/original/3X/8/f/8f754af4da0bc7eac7ea53ce67bcb8ebff850f10.webp) ![DSCF6023.webp](https://turborenault.co.uk/uploads/default/original/3X/e/0/e0c66f65ee9e5dedb99f1f8e67605036e6f31228.webp) ![DSCF6020.webp](https://turborenault.co.uk/uploads/default/original/3X/f/5/f52decb599c7231d2d5bcc0be40083a887e87c97.webp) ---
**Author:** ![Mark\_L](https://turborenault.co.uk/user_avatar/turborenault.co.uk/mark_l/32/1291_2.png) [@Mark\_L](https://turborenault.co.uk/u/Mark_L)\ **Post date:** [June 28, 2022, 6:31am UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/7 "2022-06-28T06:31:12Z")
Not considered a 172 engine can be close to 200bhp and a pretty simple swap or just a low boost turbo kit with an efi module will see 230bhp. ---
**Author:** ![CSR](https://turborenault.co.uk/letter_avatar_proxy/v4/letter/c/b5e925/32.png) [@CSR](https://turborenault.co.uk/u/CSR)\ **Post date:** [June 28, 2022, 8:43am UTC](https://turborenault.co.uk/t/99-convertible-fitting-a-225-engine/59729/8 "2022-06-28T08:43:59Z")
I have a bit of a list of projects to do - have small off-road thing with a 2 litre Mondeo engine in the back needs to be tidied up and sold need to finish off my Jeep CJ7 so it can be used right now - getting my Chevy S10 Crewcab ready to use - been stored up for a couple of years then I can sell the S10 we currently use for towing then there’s the 53 ugly truck - already done loads but still needs many more hours and quids might have a Land Rover series 2 to restore for a friend as well the Richy Beno might have to take a back seat for a bit - going to try and get it unde cover hopefully it won’t get any worse