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BT 20V swat complete but weak?
Posted: Fri Jul 11, 2014 2:29 am
by webyosan
It is my first time and I want to know if this how a BT 20V 4age drives like:
It's done and there's no codes, all parts replaced with either OEM or AISIN...Everything is pretty much new, timing is correct, and adjusted ITB to spec. Took it for more spin and it drives fine on normal daily or freeway, but when WOT it doesn't go anywhere..Just loud ITBs and doesn't pick up until past 4k rpm...It is like a flat spot between 2-3k rpm. ECU is good and all voltages/ohms to each sensors are withing spec, no bogs, no backfires...
Re: BT 20V swat complete but weak?
Posted: Fri Jul 11, 2014 9:47 am
by morgan
VVT solenoid
Re: BT 20V swat complete but weak?
Posted: Sat Jul 12, 2014 5:41 am
by onnaj
Stacks could kill torque a lot, depending also on the lenght of the stacks.
Re: BT 20V swat complete but weak?
Posted: Sat Jul 19, 2014 6:13 pm
by sprinterr86
torque? its a corolla.. LOL
Re: BT 20V swat complete but weak?
Posted: Sat Jul 19, 2014 7:10 pm
by morgan
...the little that you have. lol
Re: BT 20V swat complete but weak?
Posted: Sun Jul 20, 2014 9:59 am
by sprinterr86
i will be running 120mm stacks, planning on buying those T3 air filters, but im looking for alternatives.
Re: BT 20V swat complete but weak?
Posted: Sun Jul 20, 2014 10:02 am
by sprinterr86
webyosan wrote:It is my first time and I want to know if this how a BT 20V 4age drives like:
It's done and there's no codes, all parts replaced with either OEM or AISIN...Everything is pretty much new, timing is correct, and adjusted ITB to spec. Took it for more spin and it drives fine on normal daily or freeway, but when WOT it doesn't go anywhere..Just loud ITBs and doesn't pick up until past 4k rpm...It is like a flat spot between 2-3k rpm. ECU is good and all voltages/ohms to each sensors are withing spec, no bogs, no backfires...
have u done any minor tune up? spark plugs? wires? and also wut kind of fuel pump are u using? wut gas are u using? u can start trouble shooting and check off variables off the list. worst comes to worst, the motor u got is tired.
Re: BT 20V swat complete but weak?
Posted: Sun Jul 20, 2014 12:33 pm
by burdickjp
Compression test? Leak down?
Everything asked so far is good advise. I'd pay attention to the VVT solenoid.
Re: BT 20V swat complete but weak?
Posted: Mon Jul 21, 2014 1:31 am
by onnaj
sprinterr86 wrote:i will be running 120mm stacks, planning on buying those T3 air filters, but im looking for alternatives.
That should be a good length for torque!
I'd also say measure the resistance of the oil control valve and do a complete checkup of the distributor cap, rotor, plugs, plug wires, etc. Plug wires should have no more then 25Ohm (from my head). But if you use google and search for the 4age blacktop manual you'll find some links to the manual.
