Does anyone know if there is a bigger throttle body than the stock 04 tl and does any1 know how to make the vtech hit harder

 

Its VTEC not vtech.....

 

yeah if we had a DOHC not a SOHC... THEN it would hit harder

 

How to make VTEC hit harder-

yeah its called a turbo

 

I am under the impression that the RL TB will fit on the TL. I am not 100% on that. I have heard of ppl using the TL TB on a TSX. I have not looked into this completly, but it may give you an idea and a direction to look in.

Also guys, don't be so cynical, yes he miss spelled vtec, but don't chastise him for it. He is new to the Honda world . Lets welcome him and try to help out.

As for the vtec hitting harder, you would need a higher profile vtec cam. DOHC is not the answer. You would need to open the valves up more to allow more air in. The vtec lobe on the TL is not very aggressive at all, we need someone like skunk2 to manufacture a more aggressive cam for the TL. Maybe this will happen with the introduction of the TL in the JDM world.

Jason

 

they make a kit for the throttle body to be gapped out a lil bit for more air and if u want your "VTEC" to hit harder get a controller and make it start around 2800RPM LoL!

 

1 - the new throttlebody needs to be drive by wire (so TL, TSX, and RL) are the only ones available
2 - swapping a larger throttle body will do little to nothing for performance. Airflow will travel through the point of least resistance.

Ex. If you're throttle body is 4" and the rest of the intake tract is 3" (intake and intake manifold) the air is only going to flow at a greater volume through the throttle body but then restrict again once it hits the intake manifold opening.


I am currently working on a project to swap out my intake manifold, throttle body, and intake on my 99TL with a TypeS IM, TB, and custom intake.

The custom intake is complete, the TypeS throttle body is on, and I'm currently installing the TypeS intake manifold.

Bottom line, unless you port match the entire intake tract, don't expect any gains.

 

Believe me, I understand, I was trying to answer the question from the original poster. I had 70MM TB, Port and Polish on IM and head on a 97 Prelude with the H22. I went through alot of work to P&P all of it. GL with the project and keep us posted on how it turns out.

Jason

 

The key to increasing airflow on a street machine is maintaining manifold vacuum. If you go under the stock readings, your car will idle rough, lack low to mid-range throttle response, and just not be well suited for general use. If you go over the stock readings, throttle response will be more crisp in the low to mid-range, but the upper RPM range will suffer seriously.

Let's say your stock TL generates 21 inches of mercury at idle and has a 65mm throttle body. Then you install a 75mm throttle body with no other changes other than a real CAI or a WAI. Your manifold vacuum may drop to somewhere around 17 to 18 inches of mercury. This is going to adversely affect low to mid-range throttle response, idle, and just the general drivability of the car. Now you install a full catback exhaust. The TL already has a decent exhaust on it, so the gains would be marginal here.

As was pointed out by Black_05_TL_6SP and NSXNEXT, you need to match the components you are installing. Higher lifter, longer duration cams and some head work would help this out.

As a rule of thumb for bolt-ons, as you free up the intake side, you need to also free up the exhaust side and they need to be balanced. When you start getting into larger throttle bodies and honed out or larger intake manifolds, you need to spend time and money on some of the internals and the exhaust. Unfortunately our TLs cannot accept headers, so if headers are in the plans, after-market heads are a must.

Just my 2 cents.

 

As for the exhaust, the best bet to free it up that way is to go with the Eshift ProCats. They make a huge difference on the exhaust side. Since headers are not really going to happen on the TL, these are the best bet to keep the air flowing.