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I'm with green light and they were excellent and are specifically for modified cars.
Yeah mate if you don't mind going through the hassle of posting it, it would be greatly appreciated :D
No doesn't drive ok, revs don't climb as fast and feels down on power.
I'll try the spark plug thing you mentioned and see if one of them is...
Yeah not driving it at all, been sharing my partners Citroen C1 last 2 weeks.
Could be a fueling issue as @Pav says, I'm just hoping it's a...
Check emissions light on dashboard and exhaust sounds a lot louder than usual, popping and banging a lot more than before dash light....
That's nothing, wait until the exhaust manifold goes, now that's an expensive one!
You're both just soft, car drives much better with them fitted :P