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So I installed a k&n drop in filter and decided to move the ducting from the intake box to the bottom behind the fog lights in an attempt to make a CAI...

It didn't work... I undid everything but now the car still holding back and it catching its tail to go past 140... Help out a fellow tuner anyone? Please?

wat milage is it and have you tried cleaning the air flow sensor

It now doin 106k and I haven't tried cleaning it... But I will now...

This didn't work.... Help? =(

if you located in south environs or willing make a trip i could check it out for you... give me a call 4952320

thanks turbohead but i am from san juan so time to make that south run might be a issue... i have some other options to check out before i look around again...

Unless the engine check light is on your problem must be service related.
With my clients who come into my network with vehicle as you described I generally ask the following questions;
-when last was the intake,throttle body and injectors properly cleaned.In case of injectors removed and serviced.
-when last were spark plugs changed and if so with what.
-Has the vehicle suffer any overheating or associated trauma.
-How regularly is the oil and filter changed and with what products.
Most times I have found that the average owner demonstrates a loose maintenance regime and does not for instance do a full "baseline" service every 18 to 24 months using proper consumerables.A full service which is designed to baseline the vehicle will normally manifest a 'poppin' in the performance of the vehicle and is quite unmistakeable to the owner.

@toyolink... The only thing I haven't done from the list of stuff you called out was clean the injectors. However... Prior to my homemade cai attempt the car would reach 200kmph quite easily... It was only since I tried out the cai that this issue came about and now the car won't go past 140...

I was told to have the diagnostics run on the engine and possibly reset the brain from the scanner itself and see if this resolves the problem. NB The check engine light is NOT on...

I am completely at a lost with this thing but many thanks for your input...

Ensure that the the CAI is tight with no leaks around d clamps near the hose then remove both battery terminals for a couple of mins to d a soft reset.