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The design of the back box was tweaked a number of times to ensure there was no resonance or exhaust drone with each layout being extensively road tested to find the optimal design
this means less welding and a stronger intercooler
Example of Focus RS sports exhaust (Venom cat-back exhaust)
2mm pipework and fits from the Turbo backwards (turbo-back) replacing the Downpipe
During testing we found this to make a significant increase to airflow and a reduction to inlet air temperatures (IAT’s)
Cobra Sport Vauxhall Astra G Coupe (98-04) Rear Box Performance Exhaust A4 (B8) The design of the backFits 1. 4 1. 6 1. 8 2. 0 and 2. 2 Petrol models. Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality. This Astra performance exhaust is made in 2" 50. 8mm pipework and fit from the centre section backwards replacing the rear section. Please note this will only fit the flange type fitment to
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