My 380 Sport with TVS1900

[steveoexige]

This is my 3rd chargecooled tuned Exige and I've always shared the data where possible. Even then they still sometimes end up going bang!

[steveoexige]

OK, so I had a good chat with the SCS guys and to cut a long story short they said the tune is exactly where they want it to be based on exhaust gas temps, timing, etc. They said they've purposely left the timing on the safe side, just as they won't run any higher boost than the peak 6.5psi I'm currently running. They said that they absolutely wouldn't be running that AFR if it wasn't for the chargecooler and the ECU. They have great faith in their ECU in regards to knock control too, and didn't have much to say about the OEM factory setup and ecu to control knock or fuelling. 

I haven't collected the car yet but it was interesting to hear them say that they could have tuned it for higher specific power outputs but safety 1st and then the second priority is how it drives, the throttle response, WOT and part throttle, etc.

I appreciate your comments about the AFR, but I think those readings in isolation don't tell the whole picture. But "what do they know?" 🤨 😁

I'm looking forward to driving it bearing in mind its gained 125bhp. 😬

Will report back soon.

Edited November 30, 2020 by steveoexige

[Kristof Thys]

Will be a blast to drive! And many thanks for the views of SCS/24-7, appreciated.

[steveoexige]

Final update, before I collect the car next week. I spoke to 24-7 and SCS again today and the dyno reading of 0.86 wasn't the final tune. After further tweaks it's running lambda 0.8 which I gather is 11.76 AFR.

I've known for ages that the god awful Lotus OEM knock control requires a super rich tune, so with the Delta ECU running the show I'm happy with that fuelling. I absolutely trust these guys, they drive a 600bhp Evora road car also running a charge cooled TVS1900 so they know their stuff. 

To 24-7 and SCS 👋- I know you will see this post update so thanks for your help and patience dealing with me and all my questions. I can't wait to get the car back. 

[steveoexige]

Quick update as it's been such a long time since I got my 380 back after it's work. I've put a thousand or so miles since the TVS1900 got its EX500 chargecooler upgrade and the Delta ecu and 2 things are obvious: the operating temps of the engine are so much lower, before the work it always ran hot and you could literally feel the timing being pulled along with the reduction in power. Its chilled all the time now, even sitting in standstill traffic on a hot August day. 

Secondly the torque....the bump in mid range is HUGE, so much so that I've had to recalibrate my steering inputs. Mid-bend it will really punish you if you aren't on your game. It's a very wide eyed, triple shot espresso after affect from a spirited drive on my favourite roads.

I'm chuffed it can deliver the performance on repeat, even on hot days and at a super mild 6.5psi boost.

As for the Delta ecu....I couldn't tell any difference from the Lotus oem item as it was fitted and mapped at the same time as the EX500 kit (Komotec chargecooler, front heat exchanger, fuel rail, etc). All the factory stuff works including the cruise control, etc.  I'm not sure what I was thinking though as the Delta guys are ex-Lotus engineers.

Other than the final engine mods it's had some detailing and porsche white gold highlights.

Love this car sooo much, in my mind there really is nothing to touch it.

[MrD]

Fantastic, now, where are the videos?:)

[Nathan]

On 19/09/2021 at 19:15, steveoexige said:

Quick update as it's been such a long time since I got my 380 back after it's work. I've put a thousand or so miles since the TVS1900 got its EX500 chargecooler upgrade and the Delta ecu and 2 things are obvious: the operating temps of the engine are so much lower, before the work it always ran hot and you could literally feel the timing being pulled along with the reduction in power. Its chilled all the time now, even sitting in standstill traffic on a hot August day. 

Secondly the torque....the bump in mid range is HUGE, so much so that I've had to recalibrate my steering inputs. Mid-bend it will really punish you if you aren't on your game. It's a very wide eyed, triple shot espresso after affect from a spirited drive on my favourite roads.

I'm chuffed it can deliver the performance on repeat, even on hot days and at a super mild 6.5psi boost.

As for the Delta ecu....I couldn't tell any difference from the Lotus oem item as it was fitted and mapped at the same time as the EX500 kit (Komotec chargecooler, front heat exchanger, fuel rail, etc). All the factory stuff works including the cruise control, etc.  I'm not sure what I was thinking though as the Delta guys are ex-Lotus engineers.

Other than the final engine mods it's had some detailing and porsche white gold highlights.

Love this car sooo much, in my mind there really is nothing to touch it.

Are you selling it as it seems to be for sale on the V6 Facebook group? 

[steveoexige]

Good spot.

Long story short I've always had my eye on a friends 458 and completely out of the blue on Monday he offered to sell it to me. 

So 24hrs after preaching on here about how much I love it, its up for sale! Seriously though, I genuinely had absolutely no plans to sell it but this 458 is achingly pretty 😍 

£59,995 and I've taken a huge hit on the 380 but exige prices seem all over the place. 

Edited September 22, 2021 by steveoexige

[steveoexige]

Sold and thread closed. My lovely exige is now someone else's super rapid toy.