A few of you will be familiar with the story of my supercharged s2000 now (full thread https://www.s2ki.com/forums/uk-irela...ought-1161318/) but I thought i'd leave a review of the on road tuning i did over the last few months with AJ (https://www.facebook.com/aji.tuning.9?hc_ref=SEARCH), aka s2konroids

I've been a member for a long time and followed AJs early story (before he was tuning) with his SC S2000 before he went turbo, binned it (oops), went turbo again etc. His car story was one which appealed to me, he looked for reliable power, looking after the engine and all that mechanical sympathy stuff (as much as you can when you are boosting it i guess). I was a fan of his work i guess.

Anyway, fast forward to this year and i bought a charged car which had lunched it's (low mileage) motor. Bigtime detonation was the cause of failure (some pics on the other thread) so once the engine was fitted (by the talented Mr Worral @ Daytona) AJ hooked up to my car over at Daytona and checked over the existing map. Quite aggressive was the summary but ok to drive the car back to sunny Notts avoiding WOT . Oh, and fit a fricking wideband so you can see if it runs lean!

The tuning itself involves AJ providing a new base map and logging configs, all of which load onto the AEM in the car via some free software (from AEM) and then setting scenarios for on road logging. These begin with partial throttle acceleration and progress from there. There's a fair bit of this to get the car running how it should. In my case this was all broken up with rear brake failure, MOT failure, belt failure and other such issues. AJ was always quick to respond to new logs with updated maps for the car, it was me who drove (slowed) the timeline by breaking the car, being too busy to fix it or log etc.

So the tuning went on through October and November due to those issues (it could be done much quicker, as i say the extended timeline sits with me & the car) and this car had some lumpy idle issues resulting in stalling which took time and effort to overcome (AJ constantly plugged away at this, avoiding quick fixes to get it running well).

All of this culminated in yesterday's dyno run at dyno-tech.

The guy at dyno tech (in Ripley, Derbys) was pretty grumpy but he knew how to use his dyno and looked after the car... He was sceptical about the approach we'd taken but not when he saw the results..



so.. the conclusion

Chuffed to bits. The key to me was

• that the car was running well (tick - passed MOT no probs)
• power felt good (tick - faster than my E92 M3)
• wasn't going to burn a hole in the piston (this was probably a £3k+ engine swap headache)

No detonation on the optimal map and good power with a progressive, smooth, curve.

We saw det when we tried an aggressive timing map AJ supplied (which he predicated would be the case). Clearly the car was detonating before on Romain's map, whether that was down to dodgy injector seals, weak coilpacks or the map we can never be sure but the car was running more aggressive timing on that map albeit on a UK spec engine. It made 395 but the cost was a blown engine 14 months or so later)

Throughout the process AJ has been giving me advice and opinions on all things supercharged S2s and contrary to a generic tuner he knows this engine well (Dyno tech said lower your compression with a gasket and change the timing but that's an approach suited to Evo's and Scoobies which are all about the FI). I also read Supercharging Performance Handbook by Jeff Hartman and he talks a lot about the F20C being strong to cope with high revs which is where the majority of stress comes from and so being very suited to charging (which is actually lower stress).

My advice, get it tuned by an expert, get it tuned how it will be used.. One happy customer

 

Good read that. Exactly why I preferred to let professionals do my install/map but appreciate that is half the fun/challenge for others.

 

i guess that's my point mate

AJ is the man as far as I'm concerned for these cars, he's run both SC and Turbo for years, not hours

 

Shame he's so far away from us down south.

 

Was the 384hp at the wheels or estimated at the flywheel?

 

it's all remote. I've never met him haha

 

fly est, only running 12psi

 

Glad to hear all has turned out well.

Now head over to Derby and take me for a spin .

Rob

 

Nice results there mate.

So are you still running 11.0:1 or did you get low comp pistons?

 

That's a great result! It's great to have such a community as we have here!