7MGE and ITB's?

[abently]

People can do what they like with their money. Just don't expect good bang-for-buck returns.

[The Real Roadrunner]

do yourself a real big favour and have a look at all the development that he's put into his engine.
then tell me different

v-eight.com

[RObErT_RaTh]

People can do what they like with their money. Just don't expect good bang-for-buck returns.

If you're working on an NA engine, most people know this already We dont all do it for bigger dyno numbers

[jezza323]

ITBs are more about area under the curve, and the throttle response gains than peak power IMO

those are the reasons i have gone with quad throttles anyway

[ed]

It may be wise to find out what the exact flow gains are. I know that on a full-race N/A 1UZFE, ITB's only allow 15% better flow than the standard Manifold, so in that case (for street use) it would be wiser to just have the stock Manifold Extrude honed and/or larger t/b then to mess about with ITB's.

i lol'd...

[Screamn_Sleeka]

I know that on a full-race N/A 1UZFE, ITB's only allow 15% better flow than the standard Manifold

if its not flowing 750+CFM it isnt for racing buddy.

[rms]

I know that on a full-race N/A 1UZFE, ITB's only allow 15% better flow than the standard Manifold

So if I put a std TB and manifold on our 534 bhp race engine - how much hp do you think it would lose ?

[CrUZida]

I know that on a full-race N/A 1UZFE, ITB's only allow 15% better flow than the standard Manifold

Whats the chances that you are quoting (albeit incorrectly) this page?
http://www.a1turbos.co.nz/eight.html

[RObErT_RaTh]

Cruzida, I still want that rally car in the link

And forgive my noobness guys but are there any other sensors ie MAP that are needed when doing an ITB setup or does it just use the TPS with a decent ecu??? Cheers

So if I put a std TB and manifold on our 534 bhp race engine - how much hp do you think it would lose ?

I'd be more interested in how much 'response' it would lose
(It's more important to me)

[rms]

I'd be more interested in how much 'response' it would lose
(It's more important to me)

Response is related to hp. The power to accelerate a certain mass.

With ITB's you MUST run throttle position. Contrary to popular belief, they can be set up as well as any map.

[RObErT_RaTh]

With ITB's you MUST run throttle position. Contrary to popular belief, they can be set up as well as any map.

Awesome, that's what I needed to know cheers

My mate and I were discussing it and we'd both seen examples but just weren't sure how it all came together

[oldcorollas]

for some ITB, you can use MAP for more than part throttle.. but idle will be best served by TPS mapping...

then again.. one of th epoints of having ITB is to have higher runner pressures... and if you have higher runner pressure.. there is no vacuum signal

then again, it may just be a matter of readjusting the range of the MAP table in ECU..
ie, instead of 30-100kpa, run 70-100kpa or 80-100kpa...

[5000gt]

That IS the reason you run both....
TPS for idle and >15 degrees map.
at least it's the easier way out.

Then there is also the worry of vacuum for the brake boosters and such.... you'll need to have a vac reservoir

[rms]

That IS the reason you run both....
TPS for idle and >15 degrees map.
at least it's the easier way out.

Then there is also the worry of vacuum for the brake boosters and such.... you'll need to have a vac reservoir

WHAT is the reason you run both ? Is MAP more accurate than TPS with ITB's? Why would you switch to MAP past 15 degrees ?

Why is it easier ?

Isn't your brake booster a vac resevoir ?

[RObErT_RaTh]

If you did use a MAP sensor would it just go in one of the runners or where would you mount it???