Carl H
Supporting Member
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4872 posts
1995 240SX SE RB20DET Powered!, 1995 Jaguar XJR...needs paint.
Charlotte NC
8-4-2003
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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.
SHift_BOOM. Damnit.
Doing an RB2X swap and scared of the wiring? Check out my thread in the RB section.
Now offering VH and SR/KA/CA conversions!
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SuperHatch
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907 posts
07 Tundra, VH Powered S14, VH Powered 92 Slicktop Z32, 92 Q45 Beater
Manahawkin NJ
11-17-2006
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| « Re: Thoughts on TCS delete? (ktzed) | 6:59 PM 6/21/2009 |
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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.
- Stephen
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Orphan
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84 posts
UZZ31 Soarer
Brisbane QLD
12-9-2008
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| « Re: (Carl H) | 7:09 PM 6/21/2009 |
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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.
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Carl H
Supporting Member
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4872 posts
1995 240SX SE RB20DET Powered!, 1995 Jaguar XJR...needs paint.
Charlotte NC
8-4-2003
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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.
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Wes M
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54 posts
Mountach (Convertable Widebody S1 Rx7), R33 Skyline, 280ZX, Camry
Auckland NI
3-28-2009
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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 miles
2) 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 anywayPumping 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!!
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ktzed
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26 posts
Victoria BC
7-24-2005
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| « Re: (Wes M) | 11:21 PM 6/21/2009 |
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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.
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Wes M
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54 posts
Mountach (Convertable Widebody S1 Rx7), R33 Skyline, 280ZX, Camry
Auckland NI
3-28-2009
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| « Re: (ktzed) | 1:25 AM 6/22/2009 |
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Welcome to the dark side
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Mettler
VH/VK Moderator
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1405 posts
HR31 GTS-8 coupe, VH41/45 Hybrid Transplant
H Town
1-15-2006
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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
Nissan VH V8 > your preferred engine.
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T45
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1484 posts
King Kong powered Z32
va beach va
6-9-2006
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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.
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