The advice for my sticky throttle has been very helpful, and will get the butterfly valve in the throttle body cleaned, My tuner was jammed out, but had a brief look, at my engine. Pointed out the throttle cable resting on a very hot crankcase was not good, idle speed and accelaration was extremely poor and required adjusting and tightening, was possibly the reason to my feeling of a slip of the clutch and cut out feeling occurring when reversing, but importantly to the reasons of why the car was taking off like a bad condition 1.2L car.. Advised to use some cleaners for the fuel, oil and valves to see if any change, And an rr test would provide good info if the car is responding to the mod's and power increase, should of regained roundabout 10bhp with all mod's, but will gain another 5bhp with better cold air feed and sports cat, and manifold wrap, as there are very big tubes, which draws alot of heat, could even bring it to a 20bhp regain, but only the rr test could really provide that info in bhp increase, As informed the history to the ST170. The problem with performance was the standard air box intake was a poor design as a very small section fitting to the airbox from the front end of intake does not provide good amount of oxygen, which can be seen when the air box is opened and element removed, so not intaking a great velocity of cold air, Heat was a problem with the ST170 it draws alot of heat around the engine with the fans kicking in constantly to cool the temp, dragging its performance down, also be good to look into other faults that could be there that has not been diagonosed, is the distributor functioning but faulty, to why the mag leads are not sparking to its highest peak, is the valves sticky, is the Gasket wearing ETC.. So been informed a good investigation with good mechanical advice and to always receive as much knowledge as i can, to even owners who may of experienced this, so i pick up on what i really feel could be the cause, in which you all are helping with to narrowing down if there is a problem to it not giving good performance, also told to give it a good service and an oil change and filter change with only castrol edge.. but the adjustment and improvement, done to the idle speed and throttle has been good, getting a feeling of a better take off now and snappier response, would like to thank for the advice on speaking to my local tuner with my issue