Oh Dear...I take delivery of my SL55 Y pipe and intake pipes on Tuesday and as I do not have access to a rolloing road, dont think it is worth fitting now. Oh well, I will sit on it for a while (store it for later use, maybe) and see if anyone is able to Dyno with "full Throttle" and some Qtr mile times. If it does show an improvement I will fit it straight away.

I must say I am very supprised by the results. Does the ECU retard timing until the engine is up to temp ? My Subaru used to and it also cut Boost until the car was warmed up. This may account for lower readings.

I am really keen on hearing the supercharger a bit more, but don't want the "non stock" appearance of the "Needs Wings" set up (I would like some gain though).

Does the SL55 Y pipe keep the air/fuel mix in "safe" limits?


Also I would be very supprised if the SL55 Y pipe flowed more air than the "Needs Wings" set up........it's so bizarre.