GTTUNING

GTT Pro-cockpit Variable Boost Conversion (P001) Our best selling product over 1200 hundred sold! Features Fully variable control from dashboard, power can be reduced when engine is cold, in poor weather conditions and for motorway cruising, therefore increasing engine & turbo life. Allows even higher peak power for short periods. Fully and correctly re-jetted carb. (jets). Boost 'ceiling' can be pre-set, preventing accidental over-adjustment. Superbly engineered quality with attractive polished finish. New super thin tubing and 'Camotzi Pro-grip' fittings (as used by Maclaren Formula 1). Tubing supplied in green, yellow, red, blue or black for fast and neat installation. The basis for all our conversions. Metal intercooler clamps are provided, modified ignition details and supplied with full instructions and diagrams for simple fitment. On it's own increases power by over 30%! £139 + VAT
GTT 'Spider' Valve (P002) For use with our Pro-cockpit in-car adjustable boost control. It allows the user to accurately pre-set both minimum (below standard if required) and maximum boost ceilings, using two adjustable and lockable controls in the engine bay. This prevents accidental over-adjustment plus below standard boost for motorway, cruising etc; saving petrol, turbo and engine wear. Easy to fit & easy to adjust. Ł59 + VAT
GTT Turbochip 160 bhp Features Full under bonnet adjustment. Unique locking system prevents tampering. Includes carb jets, metal intercooler strapping, pipework and all fittings. Ł99 + VAT
GTT Closed Loop Dump Valve System (Twin version shown) GT Tuningís system, exclusively for 5GT Turbos, took twelve months to develop and improves on the advantages of conventional universal application after-market dump valves in various ways:- The system is closed loop which means when closing the throttle during gear change, the dump valve opens, but rather than waste the wasted charge, so to speak, our system actually re-circulates it using it to assist turbo spin up, keeping the turbo spinning faster, further reducing the dreaded lag. Secondly, by using a long travel piston inside the dump valve, a larger exit is created for escaping air giving more efficient operation. Also, by using relatively low spring preload, the valve is kept open during gentle / normal acceleration. This means that the turbo is spinning faster than normal (although with virtually no load due to the closed loop). Should the throttle then be snapped fully open, the dump valve instantly closes and the extra turbo speed, already there, releases near instant response (low lag). Turbo stress is greatly reduced due to virtually no back pressure onto the turbo during gear change. Wear is therefore reduced, which will increase the turbocharger's life-span. Combined with the above, we have revised the breather system to incorporate our 5GT 2-way breather filter. This gives further improvements by eliminating unwanted fumes from entering the engine intake, which will reduce pinking. As if all this were not enough, we have also included slight carburettor mods. to improve smoothness and give more progressive part throttle acceleration. Can be used silent or very noisy!	Twin dump valve Contents of the kit are as follows:- GT Tuning polished stainless steel 'T' section with machined grip grooves and offset outlet for optimum dump valve positioning (i.e. as near to the throttle as possible). GT Tuning 2-way breather filter. Carb. jet, quality silicon hosing (red, black or blue), all fittings, connectors and clamps. Full instructions / diagrams supplied for simple DIY fitting.
Fast Road Version (P004a) (up to 20 psi) Ł169 + VAT Twin Dump Valve System (P004c) As used on the two winning cars at UFC. For improved response at high boost pressures. From Ł289 + VAT	Race Version (P004b) (over 20 psi) Ł199 + VAT Upgrade Kit (P004d) (i.e. upgrade your existing GT Tuning Dump Valve for the twin version). From Ł149 + VAT

JR Washable Replacement Air Filter Element (P005) Around 3bhp improvement over standard .Plus can last forever. Ł32 + VAT	Standard Air Filter Element (P006) Ł8 + VAT
GTT 'Group A' Ram Raid Induction Kit Fast Car Magazine R5GT Induction Kit Test "Gained 7 1/2 bhp in midrange more than double any other achieved". This exciting product from GT Tuning has been flow bench tested against popular alternatives and gave good improvements to flow in each case. How? The size of the filter used is far greater; the corrugated surface and extra dual laminate circular filter screen creating yet more intake area. Positioned inside the filter is a 'Group A' Ram Pipe. This is C.N.C. machined from solid HE30 aluminium, allowing a full 270ş rolled edge, optimum trumpet shape and a counterbore at the narrow end to prevent a 'step' on the inside. This gives totally unrestricted flow and a very low intake temperature due to a removable flap in the wheelarch and an optional aluminium air ducting directing air from the front bumper. For sprint use the 'Ram Raid' Induction kit also allows the trumpet to be fitted directly onto the turbocharger intake for ultimate performance. Although this method is not recommended for normal day to day use.	GroupA Ram Raid Induction Kit.
Already using JR or K&N filter element in standard air box? NO Complete kit required inc. K&N/JR element, filter screen, anodised 'Group A' Ram Raid air pipe, 2x end plates, tapered adapter sleeve, springs and jubilee clips. (P007a) Ł99 + VAT. YES Ram Raid Induction kit available (using existing element). (P007b) Ł79 + VAT.

GTT Competition Cylinder Head Gaskets (P008) Thicker and with more reinforced metal between the cylinders used reliably at 35 psi at UFC '97 and '99. Beware of imitations. Ł69 + VAT
GTT Competition Head Set (P009) Includes the above plus reinforced manifold gasket, rocker cover gasket and fibre washers, 2 x water pump gasket, end plate gasket and carb. base gaskets. We recommend the cylinder head is always skimmed on removal (minimum clean up only), therefore the full gasket set will always be required. Ł94 + VAT
Piston / Liner Sets Best quality as used on all our cars. Maintains standard compression. Four pistons, four liners, four gudgeon pins, four ring sets and four seals. (P014a) set of 4 Ł379 + VAT. or (P014b) Ł109 + VAT each.
GTT Competition Cylinder Head Bolts (P010) Set of ten, stronger. Allows additional tightening of the head bolts, plus less stretch and therefore less re-torquing. well worth it. It's a lot of work and not worth cutting corners on. Ł25 + VAT.	Locking manifold Nuts (P011) Set of twelve. These will not unwind and fall off, as the originals do. Prevents the manifold gasket from blowing. Ł6 + VAT
GTT Low Compression Piston / Liner Sets (set of 4) We don't actually recommend lowering the compression below standard. However, these are available and can be used to compensate for an over-skimmed head. Further reduction in compression results in fuel wastage, loss of low rpm power and requires excessive boost to compensate for it. Ł499 + VAT. Set of 4.	Exhaust Manifolds (P012) These are over Ł400 new from Renault. We do, however, keep good (i.e. not cracked) second hand items in stock. P.O.A.
Cylinder Head Repairs (P016) Over-skimmed heads, warped heads, distorted or burnt valves and seats, welding, worn guides etc. etc. Most heads can be repaired. Let us quote you on repair before you scrap it! P.O.A.	GTT Inlet Manifolds (P013) Again, very expensive new. These are available as a re-conditioned exchange unit at a huge saving. The corroded water unions are machined out and thicker replacement items fitted. The manifold is finally vapour blasted to give an 'as new' appearance. exchange Ł89 + VAT
High Output Alternator (P018) 100% new, big current delivery, ideal for cars with sound systems. Exchange Ł129 + VAT
GTT Lightened and Balanced Flywheel (P019) For better throttle response, why not fit one whilst changing your clutch? Exchange Ł89 + VAT	Adjustable Cam Timing kit (P021) Adjustable sprocket allows cam timing to be set accurately for maximum power. It can be used with any cam, including standard, with worthwhile improvements. Ł85 + VAT
Genuine Renault Replacement Engines (P017) Full engine complete with cylinder head, water pump, rocker cover, sump, oil filter and platinum spark plugs. High proportion of brand new parts. The best you'll get. Excellent value. Our advance ordering system allows us to keep these in stock most of the time. Exchange Ł929 + VAT
Extensive testing and development over the last 5 years has finally resulted in two new exclusive; GT Tuning camshafts with carfully selected durations and lifts. These are the only camshafts available which improve allround on the standard item. (Remember the 12.64 second run used a standard cam.) Both are very driveable and perfectly suited to normal road use and race conditions. They are available on exchange or we can re-profile your own cam. FITTING This normally involves both removing the engine AND the cylinder head. However, GT Tuning have devised a method and custom made tooling to change the camshaft without doing either! This immense saving on both labour and parts (gaskets etc) is passed on to you. So let us quote you now!	GTT Timing Chaincase Cover (P022) (for use with the above) Features quickly removable inspection and adjustment cover for fast and easy cam timing adjustment. Exchange Ł79 + VAT Chrome version P.O.A.
GTT Stage 1 (P020a) Ł149 + VAT (exchange)
DIY GTT Stage 2 (P020b) (Use only with GTT Stage 3, 4 or 5 gasflowed cylinder head) Ł149 + VAT (Exch) DIY.
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