tb mod results and a question
#1
Nothin But a G Thang
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tb mod results and a question
well i got bored and did the tb mod, it feels great, the engine revs faster and much smoother and idles just fine. it seems to have a little more power and torque across the whole rev range. so i say anyone thinking of doing this should. one question is that when my engine is not under load ie..idling or in neutral while braking the engine light comes on, but once i hit the gas it goes away. has anyone had a similar problem like this? ill pull the error code tomarrow cuz i dont feel like doing it in the dark.
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#8
Refined Valley Dude
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You can do it to an NA as well. Some people love it, others have complained bitterly about the results.
Feedback and comments:
https://www.rx7club.com/forum/showth...light=throttle
Porting the intake manifolds:
https://www.rx7club.com/forum/showth...threadid=79511
edit: another write-up -- http://fc3s-pro.com/TECH/HOWTO/TBM/tbm.html
Feedback and comments:
https://www.rx7club.com/forum/showth...light=throttle
Porting the intake manifolds:
https://www.rx7club.com/forum/showth...threadid=79511
edit: another write-up -- http://fc3s-pro.com/TECH/HOWTO/TBM/tbm.html
Last edited by Amur_; 03-23-03 at 12:25 AM.
#10
Daily Domestic Killer
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it fucked my **** up UP, luckly I found a UIM and TB with BAC, TPS and all the stuff on the upp intake mani...for 30 bux!!!! gonna try and keep it stock much more low end....
#11
I'm a boost creep...
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Originally posted by jwall
can u do this mod on a n\a? or is it just turbo?
can u do this mod on a n\a? or is it just turbo?
also what are the advantages? and whats bad about it?
Note that the removal of the thermowax (cold-start idle-up system) is not required for this to work. It's a seperate system that can be left functioning normally. Removing it will mean the engine will not idle until it warms up.
#12
I Post In The Nude
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Also, make sure you use the appropriate materials if you do decide to take out the cold start assist. Rico05 I believe used JB Weld and thinks it may have been the downfall to his engine I believe. I think he said he found little peices of jb weld in his engine.
#13
mad scientist
Originally posted by NZConvertible
Note that the removal of the thermowax (cold-start idle-up system) is not required for this to work. It's a seperate system that can be left functioning normally. Removing it will mean the engine will not idle until it warms up.
Note that the removal of the thermowax (cold-start idle-up system) is not required for this to work. It's a seperate system that can be left functioning normally. Removing it will mean the engine will not idle until it warms up.
#14
Engine, Not Motor
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However, removing the cold start thermowax may make the car hard to drive in cold weather until the engine warms up. I say leave the cold start system. My version of the TB mod is simply removal of the secondary throttle butterflies, leaving everything else in place. All the benefits, none of the downfalls.
#15
SOLD THE RX-7!
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I just started mine up today for the first time cold after doing it. and it won't hold it's idle. I gota hold the pedel down for around 20-30 secs then it'll hold an idle.
water temps were at 55F before starting. I let off at 80F and it held.
my warm idle is set at the stock 750. if I bumbed that up abit, it would probably hold when cold.
water temps were at 55F before starting. I let off at 80F and it held.
my warm idle is set at the stock 750. if I bumbed that up abit, it would probably hold when cold.
#16
the blackest incarnation
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Originally posted by Amur_
[B]You can do it to an NA as well. Some people love it, others have complained bitterly about the results.
[B]You can do it to an NA as well. Some people love it, others have complained bitterly about the results.
#17
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I just started mine up today for the first time cold after doing it. and it won't hold it's idle. I gota hold the pedel down for around 20-30 secs then it'll hold an idle.
https://www.rx7club.com/forum/showth...hreadid=168628
#18
Daily Domestic Killer
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I removed the the cold start and fast idle when doing it and my car still jumped up to 3krpms when started....and its pretty stupid to say you have a vaccum leak if you car doesn't hold a solid idle right after you crank it, after it gets warmed up I'm assuming the vac read is fine and in scotts case he has no vacum rac so there arn't that many places to have a vac leak
#19
I'm a boost creep...
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Originally posted by mazdaspeed7
The thermowax pushes the TB open a little more allowing more air...
The thermowax pushes the TB open a little more allowing more air...
...and the TPS compensates with extra fuel.
Removing it will NOT keep the car from idling until its warm.
Ive seen that problem way too many times, and I can tell you its always vacuum leaks that keep the car from idling until its warm.
Ive got a ported motor, all emissions removed, TB mod, etc, and my car will hold a solid idle right after you start it.
#20
Nothin But a G Thang
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well it was the tps that needed adjustment, im still fine tuning the idle to get it correct, its not the most fun thing to do concidering i my open exhaust wakes up the neighborhood...o well
#21
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well it was the tps that needed adjustment, im still fine tuning the idle to get it correct, its not the most fun thing to do concidering i my open exhaust wakes up the neighborhood...o well
#24
Nothin But a G Thang
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yes i understand this, but i have to start it and make sure everything works right...which 9 times out of 10 doesnt b/c i am still trying to get a normal idle back or atlest below 1000rpms
#25
13B N/A POWA!
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I removed the plates on my '86 N/A, I have had no problems with the car afterward (except the whole not being tagged thing )...it was definately at great mod in my opinion.