KG Tuning

I've owned my Blobeye WRX for 8 years now and have mainly used it for drag racing. It has so far recorded a personal best time of 12.44secs @106mph at York Raceway in cold/damp conditions. Not bad considering the 316lbft Spec C STI managed 12.8 in the heat of Japan with a race driver! The car has been very reliable despite poor workmanship and mapping over the years and is currently dyno'd at 332.6bhp 307lbft @1.35psi The only people I let look after my car these days are Pat Herborn and my wife! Due to the WRX gearbox being rated to circa 350lbft I've decided to go the lightweight and efficiency route to quicker times and the mod list so far is: Ecutek remap by Pat Herborn (dyno & road)STI 550 injectorsSTI intercoolerTD05 16g TurboBlitz Nur spec backboxDecat centre sectionDecat DEI wrapped ported up-pipeCobra Sport 3" Race cat downpipeWalbro 255l Fuel pumpNGK PFR7B plugsJR Performance panel filterPerrin Turbo intake hoseSTI intercooler hoseSilicone Turbo/Actuator vac hoses5w40 Millers CFS Nanodrive oil75-90 Millers CRX NT diff oil75-90 Millers CRX NT gearbox oilSubaru Black oil filterRedline Water WetterGFB adjustable bovPerrin Lightweight crank pulleyShort shift gear leverMotordrive 5kg FIA custom racing seatsAircon removedOdyssey PC680 7kg lightweight batteryAlternator cover removedAirbox resonator and intake removedFront bumper bar removedHorseshoe brace removedBonnet sound-proofing removedBoot carpet/jack & tools/jack bracket/spare wheel & clamp removedRear seat sound proofing removedBoot sound deadening half removed*Fog lights and holding brackets removedBoot light bracket removedRoof handle & brackets removedDriver foot rest removed Centre sunvisor removedRoof strengthening plates removedRadiator side brackets removedInjector brackets removedCar stereo & holding brackets removedFront and rear speakers removedAshtray and lighter removedPolycarbonate battery clampCarbon fiber pillar coversSTI boot spoilerSTI bonnet scoopSTI scoop undertraySTI strut braceSTI side skirts17" Rota GRA lightweight alloysNankang 215 45 R 17 91W Sportnex NS-2R Semi Slick TyresTPI lightweight tuner nutsBC Racing BR coiloversSuperpro drop linksWhiteline 22mm rear anti-roll barSWRD grooved disksFerodo DS2500 padsWRX PRO calipersGoodridge Brake hoses5.1 Motul Brake Fluid Fastest run (and back up) to date: The car looking strangely smaller than a classic: So basically now the big question is 'can I hit 11.9 seconds without directly raising the power??!?!!?'

Will you be running a private reg Gambit as to not give the game away??

The Subaru Cosworth STI boasts an impressive 400 ps and the model reaches 62 mph in just 3.7 seconds, going on to cover a quarter mile in 12.75 seconds at a terminal speed of 107 mph - That must mean my Subaru WRX hits 0-60 in around 3.6 secs to run a 12.68 at 104 mph terminal? Anyone know what kind of 0-60 a 1300kg Subaru will be hitting to do a 12.68 at 104mph with a 1.88 second 0-60 foot? I did a timed 0-60 4.5 second run at York last year with 295/265 but I ran the 12.68 1/4 this year with 333/307

Contact Turbosmart, might be buggered.

You have to run it fully closed then fully open and tell us if you notice a difference in running or pops and bangs etc.

The Tuner diagnosing wasn't sure what caused the low compression par se but he did say part of a spark plug tip was broke off. He said botched wiring caused injector interference and that the map was rich on idle. Bore wash! I'm happy with 330hp. Further mods will target WHP only. One thing I did notice is that the car was making 1bar before the remap and also making it at 3800rpm. The interesting bit is that I had no restrictor pill. The scary part is my last 3 mappers all told me they were aiming for circa 1.4bar and none of them told me they couldn't achieve it!!!!!! They must just set wastegate duty and presume the car will make the boost??

The back end of most unmodded Imprezas is quite skittish at slower speeds when turning in tight and apparently the car just as a natural knack of wanting to step out left. Mine certainly handled crud before I spent a fortune on handling goodies. Even now though the back slightly tries to slide left coming on boost.

I'm running 1.35bar and it's making 1bar by 3800rpm full boost at 4200rpm Running decat up-pipe, sports cat and decat centre, All 3" from turbo back though. Car has pretty poor compression too that won't help. I've noticed on my graph that my TD05 holds better than VF34 charts, it drops from 19.5 psi to 17psi, seen some VF's go from 22psi to nearly 15psi.

Not sure if it's a rumour or not but apparently the company who makes Andy's Hybrids for him has gone bust. I bet a 310bhp WRX with an Hybrid TD04 is a whole lot of fun on the road. Full boost at 2500rpm!!!

I had some bucket seats custom made for my 2003 Blobeye WRX, I had to do the resistor mod as my drivers seat had an airbag. Saved around 40kg in weight which equates to around 9bhp if you believe the formulas.

I think the early STI's did have a TD05 and Newage WRX's only had the TD04. I think some of the early EVO's might have run a TD05 too. Anyone know what the quickest spooling single scroll aftermarket turbo is for the Impreza that supports up to 350bhp? I like my TD05 but it's dead below 3500.

The TD05 I run is a strong Turbo and at higher boosts the DV vents to air anyway. As far as a few of us worked out on another site air entering the turbo intake pipe from the OE recirc DV creates a pressure that blocks new air entering past the MAF which confuses the ECU.

I run my VTA with a stiff setting on the spring so it mainly vents back through the Turbo. I've read that this also causes a moment of rich running but I don't understand how it's different to venting to the intake from the recirc valve.

What TD models are found on Subarus just TD05 and TD04?

Does running a VTA cause lean running for a split second when the throttle is reapplied? I would have thought when you vent to atmosphere, thus not pressuring up the turbo intake pipe via recirc, then air still being sucked in by the Turbo (that is being metered and fueled for off throttle) will be getting built up in the empty intercooler.

Just fit a Blitz Nur spec back box. Remap isn't essential just for a back box and it'll be very very loud.

Yes, asap. You can run without remap for a time if you stay off boost. Decatting without a remap won't give much power just a quicker spool time, boost spikes with the chance of detonation and a CEL. If you remap after decat the car will generate up to 20bhp, run far safer and probably more economically.

0.5 BAR will feel sluggish. Put a sports cat downpipe on it, that way you'll know if you make target boost as it'll feel rapid and it'll run a bit safer until you get a remap. A quick test to see if you can make boost is to pull the vac hose off the actuator nipple when the car is warmed up during the hottest part of the day and floor it in 2nd gear. The car should make around 1.4 bar. Don't floor it in 3rd gear upwards as you'll most probably get a violent fuel cut. If the car feels much faster then you know you don't have a bad boost leak, "blocked cat" or stuck open wastegate etc.

I removed the up-pipe and centre section cats on my 2003 WRX and no CELS. As soon as I got a Sports cat downpipe I got a CEL within 50 miles, I could clear the emissions related code with a phone app but as soon as I drove it steady on the motorway the sports cat would get cold and throw the CEL again. I expect a full decat on a Newage will throw a CEL more often. An unmapped decat on an Hawk is pretty risky, especially if you are using 95 or 97 fuel. I'd like to know how a mapper deals with the 02 Sensor to stop the CEL's.