Changing The Revs The Car Boosts At?

[SECURITY]

I brought this car with the bigger turbo installed already, so your saying because the cars running rich to boost then lean onwards and the general tune being so out that your surprised my motor hasn’t blown?

Yes I am new to this... and iv got to start somewhere though, just need to brush up on my ecu knowledge.... Basicly running bigger turbo, is what you need the new ECU for it to be able to be tuned properly to run right? does this count for any new turbo? or all aftermarket parts in general?

If like the post above said, that I get a stock rb25 turbo and swap it, can I dyno on the stock ecu I have now? or is that not recommended?

Thanks for your help guys...I appreciate it heaps

because you're running so rich pre-boost you'll be getting alot of lag. im going to guess your fuel economy is rubbish?

and also because its a significantly bigger turbo, 7psi is still flowing more air than 12psi on your stock turbo - so yes, you're running lean which may cause engine failure.

you'll realise that even if youve got a stock turbo and you upgrade everything else you will be underpowered because your AFM is sucking in more air than it usually does on a stock setup then pumps out fuel according to set figures in the ecu's map vs. AFM voltage - these figures dont change for the better. your ECU shits itself and just dumps fuel when it hits the AFM voltages are lower RPM's which is why you need a new ECU or at least a remap to tune for the new breathing mods.

let me know if any of that didnt make sence.