Power FC tuning with ITBs, share your knowledge

**STiR** · 01-07-2008 01:31 AM

Hey guys,

I've been doing a bit of research re tuning ITBs and many tuners experienced with them believe that the best way to tune them is using TPS v RPM (throttle position v rpm).

I'm on holiday in sunny Gold Coast atm and don't have access to my tuner, does anyone know if it is possible to tune in this way with the power FC?

Any other advice or thoughts with regards to ECU tuning for a daily driver with ITBs is welcome. We're still in the process of improving drivability and fuel consumption

cheers
Shiraz

**barefootbonzai** · 01-07-2008 11:40 AM

I have no idea if PFC has that capability, nor if it is even nessary.

My car was driven daily with ITB's, and drivability was just superb. It drove exactly like a normal car, just more power and response all through the rev range. My setup was controled with a hondata S300. As for fuel consumption, i generally got 350km out of a tank city driving and 400km highway.

**STiR** · 01-07-2008 12:35 PM

Who tuned your set up? Problem is my tuner is the technical manager at STi headquarters in Melbourne and he just hasn't had the time required to get a really good tune with my car. So at the moment full throttle is phenomenal, but constant throttle, while sounding really cool, is horrible. In the meantime I'm working on fitting a TWM airbox to get some cool air into the system.

**STiR** · 01-07-2008 12:37 PM

Looking at the features of the s300:

'TPS based table lookup for ITBs'

http://www.hondata.com/s300.html

That might have been part of the reason you were able to achieve excellent drivability?

**fatboyz39** · 01-07-2008 02:10 PM

We use hondata s200 to control A-sport ITB's.

**dynosaur** · 05-07-2008 06:24 PM

excuse me ,

how much we r expecting for a ITB setup ?

thanks

**markoJEK1** · 05-07-2008 09:28 PM

ITB setup or just ITB's ? , ITBs will go for 1.5k and up depending on which manufacturer , and setup? You need some head work done at the minimum to actually recieve gains from putting ITBs on, other wise its useless. For eg : cams, valves, springs, retainers, etc etc for head, then an ECU that can run it S200 or up (assuming you talking about a B), then you'd look at ITB's.

Small misconception people have about putting ITB's in, is to achieve greater power, this might be true to a small extent, but ITB's main function is for throttle response. Keep that in mind, car will feel quicker because of the response of the motor, not because you gained ridiculous number of KW.

**Benson** · 05-07-2008 10:32 PM

Originally Posted by markoJEK1

ITB setup or just ITB's ? , ITBs will go for 1.5k and up depending on which manufacturer , and setup? You need some head work done at the minimum to actually recieve gains from putting ITBs on, other wise its useless. For eg : cams, valves, springs, retainers, etc etc for head, then an ECU that can run it S200 or up (assuming you talking about a B), then you'd look at ITB's.

Small misconception people have about putting ITB's in, is to achieve greater power, this might be true to a small extent, but ITB's main function is for throttle response. Keep that in mind, car will feel quicker because of the response of the motor, not because you gained ridiculous number of KW.

i got to disagree with you.. ITb's on a stock motor is a good gain, espically in the mid-range area... peak power would be roughly the same

Remember its whats in the middle that matters

**markoJEK1** · 06-07-2008 08:02 AM

yep, I agree with what you said also, peak power will be the same, is more so of what I was thinking about.

PS. to get most out of ITB's you should have a midly worked motor at the minimum, sure it will give you a gain even on stock motor, but nothing compared to a worked one. And once again one of the main functions of ITB's is to increase throttle response.

**markoJEK1** · 06-07-2008 09:27 AM

Also heres a quick quote from HPI magazine, they did article on quads.

"The main justification for fitting ITB's is not for any signification power increase, but more for the amplified throttle response. In fact
more often than not low-end torque is sacrificed for top end thrills (so it's not ideal for automatic vehicles). Another gain to be
had from ITB's is they dont forage air from other cylinders and theoretically there's a limitless supply of the 02 stuff."

**Limbo** · 06-07-2008 10:09 AM

yuo you need longer runners for low end torque, as you run open throttles, its mainly for responsiveness.

They can be run on pretty much any decent ECU, its just a pain to tune them that's all.

I had them on my 20v with the wolf 3d, seem to be fine, and it was a daily driver. It did make nice noises