Hi Everyone I just got TWM ITBS put in my car today and im suffering someproblems....i cant seem too get the itbs too open fully, every thing hooked up right but every time i step on the pedal its just struggles?the tps is reading at 30% at full throttle on the pedal...checked all the vacuum lines and everything seems all fine...even tried playin with those metal sticks adjusting the butterfly..still nothing..but ever time i play with it the butterfly is never fully closed? any one got any ideas or tips too help me out? i even tried searching for help still no help?
well im running
b18cR Jap spec
Buddyclub headers
Toda A Cams
TWM itbs 2000 with stock injectors?
hondata s300

thnaks steven

 

is the tps sensor calibrating correctly?

 

sounds like the linkage may be way out of adjustment

 

I seem too fix the problem with idling it drives smoothly now...i just cant get the throttles too open 100% max it will go when hitting the floor is 38%? is there a way too adjust it soo i can get 100% throttle...o and the tps reading is fine...

 

so are you saying that the throttle plates are not actually opening or that tps reading % is wrong?
are the itbs synch'ed?

if your throttles are mechanically not opening, and if there is no obstruction on the cable movement; your actual cable length is at fault
how far do you have to push the gas pedal before the throttles open?

 

well it opens right away,i have like around 15cm b4 the pedal hits the floor...and the tps is reading 0% at no throttle so that seem right..wen the pedal too the floor it reads 38%...wen lookin at the throttle bodies they arent fully open...and yes the throttle bodies are sync..and the cable length is fine i just cant seem too make it open 100%

 

can you manually open the throttle bodies?

 

yea i can open the throttles normally....it opens all the way but i cant seem too open it with the p[edal

 

can you post a pic? it sounds like the diameter of the throttle rotor is too big.

a smaller rotor will open faster than a larger one because of the smaller circumferance that the cable has to wrap around.

 

ummm i try post a pic 2mmrrow....with the rotor thing its the one that came with the itbs? is there anyway of getting a smaller rotor for it? thanks

 

Now that I looked at a picture on their site I think that the rotor deal is ok, its big but they compensate for it in their linkage.

I guess I would try to contact TWM, I'm sure the issue has prolly came up before.

 

if you disconnect the throttle calbe from the pedal; can you open the itbs all the way?

 

yea it can be open all the way...my friend got it too open too 60% and told me that my pedal travel too short he goes if i want too go 100% i should make my pedal travel longer? is there any other way cause im stumped..and its starting too annoy me...

 

sounds like the cable is just too long....your pedal should not have to travel any further then it does standard for them to work.

 

I had the same problem, JDogg reached down into the driver-side footwell and bent the gas pedal back upwards a bit, problem fixed. The stock pedal travel wasn't enough to open them all the way. You do need to recalibrate the TPS in your tuning SW as well, but that got them to open all the way.

 

that's some fucked up ****, still not fixed

 

I had to cut the pedal-stop on the floor in order to go over 78%.

- Derek