minus-squareI_Drive_a_shitbox@alien.topBtoMechanic Advice@gearhead.town•What issues can be caused by not putting 91 octane gas in a car that advises to do so?linkfedilinkEnglisharrow-up1·1 year agoReally nothing. I have an old VW tuned for 93 on the ECU but I can still run 91 and 89 the ECU will compensate for it and I’ll lose a bit of performance to prevent knock. linkfedilink
Really nothing. I have an old VW tuned for 93 on the ECU but I can still run 91 and 89 the ECU will compensate for it and I’ll lose a bit of performance to prevent knock.