Thoughts on TCS delete?

[ktzed]

I will be using my VH in a swap and would like to delete the TCS and EGR (and something else maybe?) to clean up the install. I was wondering how people handled this. Is a non-TCS TB necessary? How will removing the TCS and EGR affect the ECU/running of the engine?

[Carl H]

ecu could care less about the tcs butterfly/throttle body not being there...it is a seperate system with its own computer.egr will make your gas mileage drop considerably.

[SuperHatch]

Exactly what Carl said is correct. Also, you can use the TCS throttle body, you can leave the TC throttle plate in place as a small restriction or remove it and have a local welder plug the holes. A member on this forum, T45, did the same thing.

[Orphan]

Carl I always thought EGR was implemented to get better emissions ratings not better fuel economy. Can you explain how it gets better fuel economy and how much better it would be? I've seen heaps of cars without EGR and many still seem pretty reasonable on fuel for the power they are putting out.

[Carl H]

one of the uses of egr is to mantain better emissions but it also allows for a 'leaner' burn as less oxygen is present in the mixture thus requiring less fuel to reach the stociometric point.

[Wes M]

Carl is essentially right, though I thought I would throw in a few comments of how I understand things 1) The EGR is only active during cruising rpms so the most noticeable drop in gas mileage would be on long highway miles2) The loss of fuel economy is as I understand it noticeable but not horrendous 10%??3) Most EGR systems I have seen on older cars are so blocked up with gunk that they cease to function anyway

Pumping exhaust gas through my intake just doesnt sit well with me. And the plumbing is so much tidier without the EGR. So it will probably mean I end up paying an extra couple of bucks a month in fuel.. oh well I didn't put the VH in because it had good fuel economy!!

[ktzed]

Thanks for clearing this up guys. I may look into using the tcs throttle body gutted but I think I would like to pick up a non tcs one as it'll look a little cleaner. And i'm not too concerned about the fuel economy thing, its basically gonna be a weekender/race car and i'd just rather get rid of that stuff.

[Wes M]

Welcome to the dark side

[Mettler]

I had my TCS throttlebody welded up and turned to make a serrated 'hosetail' style front on it for fitting a big fat silicon hose. Works mint. _b

[T45]

I gutted the TCS body and plugged the holes with Belzona. Basically it lost a lb. or two, not much else benefit. The only thing that is a benefit is where the intake begins at, straight or with a 90 on the end. A TCS throttle body may help you route your intake easier or harder depending on your app.

Deleting EGR is good because you won't ever have carbon buildup in your intake. Bad because of fuel economy on the highway. Basically on the highway power is not needed, it's the revs that determine your speed. Same revs at 60mph, 10% less fuel going into the cyls.