High Flow throttle bodies
#1
High Flow throttle bodies
What advantages are there to adding a high flow throttle body?
What problems may occur with tunning and install?
Is there any rule of thumb in regards to maf reading and port size?
Would you need a maf screen with a ported Tb?
SHould you run a seprate maf sensor with a ported tb?
What other mods to consider first?
Thought I would get us started with a few questions, should wind up with some good debate
What problems may occur with tunning and install?
Is there any rule of thumb in regards to maf reading and port size?
Would you need a maf screen with a ported Tb?
SHould you run a seprate maf sensor with a ported tb?
What other mods to consider first?
Thought I would get us started with a few questions, should wind up with some good debate
#2
the only question i can answer is about what you need with the throttle body(not absolutly needed, but help give all the power)
-Bigger gaz pump, may be msd. the throttle body combine with intake-exhaust-headers-gaz pump-msd will ensure that you got all your pony
my friends integra got an lsvtec(integra block with SiR head) when he add his bigger throttle body , he run like that some time but the car was close to stall at lights
he install after the new gaz pump, fuel regulator, and fuel rail, now it run good, good and smooth acceleration, feel stronger, but stronger on gas too
-Bigger gaz pump, may be msd. the throttle body combine with intake-exhaust-headers-gaz pump-msd will ensure that you got all your pony
my friends integra got an lsvtec(integra block with SiR head) when he add his bigger throttle body , he run like that some time but the car was close to stall at lights
he install after the new gaz pump, fuel regulator, and fuel rail, now it run good, good and smooth acceleration, feel stronger, but stronger on gas too
#3
Senior Member
True Car Nut
Joined: Dec 2002
Posts: 5,857
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From: Halifax, Canada 91SSE / 97SSEi
PDad..... might wanna check out CGP and OQCGP....... I've heard some storys about problems with TBs.
Personally I changed my TB the sametime I had my tranny work done (LSD) and now there'* something wrong...... the LSD is hooking me up much better, but my topend is much lower. I can't blame the TB..... but I wish I had my old one to try. (had to send it back for a core refund).
Personally I changed my TB the sametime I had my tranny work done (LSD) and now there'* something wrong...... the LSD is hooking me up much better, but my topend is much lower. I can't blame the TB..... but I wish I had my old one to try. (had to send it back for a core refund).
#4
Senior Member
True Car Nut
Joined: Jul 2003
Posts: 6,127
Likes: 1
From: Westerville, Ohio 2000 Black SSEi
Re: High Flow throttle bodies
Originally Posted by PontiacDad
What advantages are there to adding a high flow throttle body?
What problems may occur with tunning and install?
Is there any rule of thumb in regards to maf reading and port size?
Would you need a maf screen with a ported Tb?
SHould you run a seprate maf sensor with a ported tb?
What other mods to consider first?
Thought I would get us started with a few questions, should wind up with some good debate
#5
Re: High Flow throttle bodies
Originally Posted by Rogue
Originally Posted by PontiacDad
What advantages are there to adding a high flow throttle body?
Originally Posted by Rogue
Originally Posted by PontiacDad
What problems may occur with tunning and install?
The Northstar and LS1 TBs are the same size though the linkage is configured on opposite sides. The N* is for a front wheel drive so it has the linkage on the same side as the L67 TB. The LS1 can work with mods to the linkage (needs to be ground off, flipped and them welded).
If you use a well made TB adaptor you could have a working PCV system. Unless you custom make something, you will not have any coolant flow into the TB therefore you may have freezing problems a -40* C and below.
Originally Posted by Rogue
Originally Posted by PontiacDad
Is there any rule of thumb in regards to maf reading and port size?
Many use an external MAF such as the LQ4, LS1, LS6 or LT1. Most of these are 85 MM.
You could use a 96-99 Northstar TB with MAF housing that comes with it. From there you can modify the housing to fit the L67 MAF making it much easier to tune.
Cheers,
#6
Great replys, thanks guys.
So if you added a larger throttle body you would would have better throttle response and more power.
The maf table would need to be reprogrammed, now would this be based off the sensor only or the sensor and tb diameter?
I agree the N* or LS1 is the way to go once you cam up but could there be some benfit to porting an L67 tb with just high ratio rockers?
I'd be anxious to see your Northstar setup Foghorn once I make it to Montreal in Sept
So if you added a larger throttle body you would would have better throttle response and more power.
The maf table would need to be reprogrammed, now would this be based off the sensor only or the sensor and tb diameter?
I agree the N* or LS1 is the way to go once you cam up but could there be some benfit to porting an L67 tb with just high ratio rockers?
I'd be anxious to see your Northstar setup Foghorn once I make it to Montreal in Sept
#8
So the question remains, do you need to reprogram the pcm if you port your throttle body?
Is this because the factory already had it calibrated to read XX when it Flowed YY and Now it reads XX when it flows ZZ?
Is this because the factory already had it calibrated to read XX when it Flowed YY and Now it reads XX when it flows ZZ?
#9
Originally Posted by PontiacDad
So the question remains, do you need to reprogram the pcm if you port your throttle body?
Cheers,
#10
Originally Posted by Foghorn
Originally Posted by PontiacDad
So the question remains, do you need to reprogram the pcm if you port your throttle body?
Cheers,