steve_l Does anyone know for certain if my vectra c 2.2 2003 z22se has a pre cat. its sluggish and miss fires. need to try something.
vocky depends where the main cat is fitted, if it's next to the exhaust manifold then it doesn't have a precat
fone Right, This 30 miles under 2k lark! What happens if you dont do it? And if youve done it but had the ecu off for a week or so,do you need to do it again? Bugging the back of the mind 😐
evocarlos fone said: Right, This 30 miles under 2k lark! What happens if you dont do it? And if youve done it but had the ecu off for a week or so,do you need to do it again? Bugging the back of the mind 😐 100miles under 3000rpm its only if the ecu gets reset every time the batteries off for 15 mins by driving steady it learns the driving style and stores it on the ecu and you get better mpg supposedly if you reset it then rag the shat out of it you will get bad mpg from the stored settings ? that was my understanding
evocarlos guy 27 said: I've never driven mine easy after ecu reset and still get very good fuel economy. me ether i always rag the shat out of it and get 24 mpg but i dont have an egr valve so down on the mpg 🙂
fone Mines running 34 mpg,egr blanked aswell! Cheers for the info,will do this 100 miles after a 10 bhp standard remap for £235 🙂