Corsa SRI Power Upgrades

By Thorney Motorsport

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Thorney Motorsport Corsa SRI Performance Upgrades
Stage 1    Stage 2    Stage 3

We think the Corsa SRI is set to be one of the most upgradeable Vauxhalls out there, its basically the same car as the Corsa VXR (same engine, drive train, everything) with a de-tuned, lower compression engine from the manufacturer. As a result the increases in power are some of the most dramatic seen – we really are getting nearly an extra 90bhp from this car!

Thorney Motorsport - Corsa SRI Power Pack 1

ECU Re-Map (+50BHP) - £450 (£550 with Bluefin Unit)


Our stage 1 Power Pack upgrade concentrates on increasing overall and in gear power delivery to increase the Corsa's punch whilst at the same time allowing for the standard engine and exhausts restrictions, the smoothness is also enhanced nicely so the power delivery is completely usable even in the wet.

All of our Corsa upgrades can be installed using the Bluefin hand-held unit. Bluefin enables complete control over the remapping process, enables you to turn the remap on or off, has the option to immobilise the car (for extra security) and even a fault code reader and OBD data display! Your car under goes a thorough check with official Vauxhall diagnostic  equipment before we even start on any remapping and the map can be custom designed for the car on our rolling road should you require.  Your car is also test driven after all the work has been completed to ensure it meets with our high standards before we pass it back. Our money back guarantee applies to all our work, if you don't like it, then you don't pay - simple. Includes full before and after power runs on our dyno and map modifications to suit the car if required.

All of our ECU/Maps are updated for free; buy a Stage 1 and upgrade the Stage 2 Remap for free (either using Bluefin or here at our workshops in Milton Keynes). ECU upgrades can be installed either via software install or by using our Bluefin installation method. For more details on how Bluefin works and the extra options it offers see HERE. All ECU upgrades installed at our HQ in Milton Keynes are custom tuned to the car regardless of whether you chose a Bluefin install or via software remap.

All of our upgrades are covered by our 60,000 mile/3 year warranty for complete peace of mind.

Price List:
(Click to Purchase)


TMS Bluefin: £550
TMS Panel Filter (G60): £45

Dyno Chart:


Corsa SRI Stage 1 Dyno Chart
Stage 1 Power Chart

Thorney Motorsport - Corsa SRI Power Pack 2

ECU Re-Map & TMS Sports Exhaust System (Turbo-Back) (+65BHP) - From: £1,869 (Non-Res Exhaust, No Bluefin)


With the stage 2 power pack we can unlock the potential of the SRI with use of our own fully developed Thorney Motorsport Sports Exhaust system complete with 200 cell performance cat.  This is the configuration we use on our race car (although we have to limit the power to meet the race regulations, so a stage 2 Sri Road car is actually faster than our race car!). The exhaust alone adds almost 10bhp to the car and we’ve designed it to sound stunning without being too noisy on the motorway – its a sporty note without being boomy as some systems can be.

Corsa SRI Milltek Sport Exhaust
TMS Sport Exhaust
Corsa SRI Milltek Sport Exhaust Tailpipes
TMS Sport Tailpipes
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TMS Sport Tailpipes

Our own exhaust range is accepted as one of the official upgrades for the Vauxhall range. A proven 8-12bhp is released from the engine with just the exhaust on its own before we even remap the ECU to suit. The heat reducing attributes of the sports exhaust allow us to run a more aggressive ECU remap for the car allowing us to generate even more power whilst still retaining 100% reliability and longevity for the engine.

Price List:
(Click to Purchase)


TMS Bluefin: £550
TMS Panel Filter (G60): £45
Thorney Motorsport Exhaust System: From £1,000

Dyno Chart:


Corsa SRI Stage 2 Dyno Chart
Stage 2 Power Chart

Thorney Motorsport - Corsa SRI Power Pack 3

ECU Re-Map, TMS Large Injectors, TMS Front Mounted Intercooler & TMS Sports Exhaust System (Turbo-Back) (240 BHP) - £2,989 (Non-Res Exhaust, No Bluefin)


Heat, its all about heat - we may sound a little paranoid about this but its based on extensive experience of this engine in a similar environment. Fortunately this experience means we know how to deal with it and generate excellent power gains without loss in reliability. Whilst the Corsa SRI has a pretty efficient cooling system its simply not enough when you run more power from the turbo charger so our stage 3 ECU remap requires us to enhance this cooling function with the addition of a larger front mounted intercooler. This doesn't just mean that we 're looking after the engine, it means that the power gains we create from the car are actually useable rather than simple  rolling road figures obtained in a snapshot of time.

Corsa VXR SRI FMIC Front Mount Intercooler
Corsa SRI FMIC
Corsa VXR SRI FMIC Front Mount Intercooler
Corsa SRI FMIC
Corsa VXR SRI FMIC Front Mount Intercooler
Corsa SRI FMIC

Think about how much faster your car feels on those cold winter mornings compared to a hot summers' day - we can allow your car to run like that all year round by the addition of extra cooling. The standard SRI intercooler is actually pretty good, its certainly as large as Vauxhall could get in the area taking into account the restrictions they faced but they are limited in terms of core design, thickness and pipework routing.

The addition of our front mount intercooler drops intake temperatures by over 45% compared to the standard car and 65% when running a higher boost map. This allows us to run a more aggressive map on the ECU to take advantage of the lower temperatures and gives a resulting higher power with this power more usable more of the time.

Price List:
Click to Purchase


TMS FMIC: £939
TMS Bluefin: £550
TMS Panel Filter: £45
Thorney Motorsport  Exhaust System: From £1,000

Dyno Chart:


Corsa SRI Stage 3 Dyno Chart
Stage 3 Power Chart


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