Hi everyone jus finally after years of wanting. Got me an RST .
Problems have been an endless pleasure till now, I'm in way over my head.
The car boosts but the around est 4000rpm(no rev counter, broken) it's suddenly feels like it's towing a ten tone trailer, as well as the exhaust note changing. Any ideas or help, I'm a competent DIY mechanic but is this something I can fix ext thank you