A throttle body for the times. The new "ETB" is a 40% lower cost option with only 9% less flow...
02-22-2009, 11:14 AM
#1
AudiWorld Super User
Thread Starter
A throttle body for the times. The new "ETB" is a 40% lower cost option with only 9% less flow...
<center><img src="http://pictureposter.audiworld.com/711/etb2.jpg"></center><p>
than its XTB big brother. The last 10% of flow on the XTB has to be done slowly, methodically and all by hand so it's necessarily more expensive and costly due to man-hours (spent in a fresh-air respirator) and grinding media consumables.
The standard XTB flows 508CFM while the ETB (which stands for "Economy/Entry Level Throttle Body" comes in at just over 462CFM. The ETB is CNC'd identically to the XTB however less than 30 minutes is spent on hand-work once the TB comes off the CNC mill. Normally an additional 4-5 hours is spent grinding, shaping, contouring and finishing the XTB, SXTB and an additional time/labor turning XTB/SXTB into a "+" series TB.
With DIY shaping/contouring any ETB could become closer to XTB spec, maybe even match their specs if someone knows a thing or two about flow. However the lifetime warranty offered with this throttle body goes out the window once it's been modified in ANY way other than the way it was delivered. Just too much risk for me to assume when others start hacking around on things. Now, with that said if it were me, I'd personally go for the additional flow as TB's are pretty much bullet-proof but I include this so there are no surprises down-the-road. All ETB's will be stamped with an "E" as in pic right next to the vacuum nipple as well as at least one other security mark to identify them to me in the event of warranty claim.
ETB's are purpose-built to a flow-spec and price-point only. They will out-flow any/all of the old bored/sleeved throttle bodies of yester-year as well as any/all still being manufactured today. Their CNC'd tapered velocity stack inlet virtually assures this. They cost less than the old sleeved TB's of 7 years ago and come with a new throttle body gasket and free USPS Priority Mail w/Delivery Confirmation US shipping as always is included in purchase price. All told that makes em over 20% less expensive than the lesser-flowing sleeved TB's of 7 years ago!
Cost is $195. A refundable $100 core charge is required if you want to purchase one but don't have an appropriate replacement throttle body core to send me at time of order. Once you replace your TB and send me a "CLEAN" useable core I will refund your $100 deposit without any associated fees taken from it whatsoever. If you don't clean your old TB before sending to me I will deduct a $20 cleaning charge. Far better/cheaper that YOU do the clean-up on it! Additionally, ALL ETB's are shipped without TPS's installed. Simply transfer your TPS to the ETB before sending me you core exchange. Again, the primary thrust here is to make them as inexpensive as possible and installing/adjusting the TPS to spec per Bentley takes time. Cheaper for you to do that than me.
Paypal is the only method of payment I accept as it's the safest payment method for BOTH of us. I will require 2 payments to be made separately; one for $195 purchase price and one for the $100 refundable deposit.
Since I don't have any expectations of how/if these will move I have intentionally limited my first production run to 10 only. Those are done and could ship immediately. If they move outta here quickly I'll make more. If not I'll limit production to a 5-piece minimum and only on an "as-needed" basis... maybe once/twice a year. Time will tell.
And please, no special requests on these. Ya know, things like "could ya do my "S" TB core this way" or "can I have my ETB all done up in the "+" spec?" These are one-size fits all and that's the ONLY way I can make them at this price, period! And once an ETB is sold it can NEVER be retro-cutomized by me to "any" other nomenclature throttle body or higher-flow specification. But unless you go internal on your 12V engine mods with things like 11:5 or higher compression pistons, larger valves and higher-than 272 duration/12mm lift cams you'll NEVER "need" more CFM than the ETB flows right outta-the-box! You might "want" more and I understand that sentiment completely. But you'll never "need" more.
It's just kinda the right throttle body at the right time.
than its XTB big brother. The last 10% of flow on the XTB has to be done slowly, methodically and all by hand so it's necessarily more expensive and costly due to man-hours (spent in a fresh-air respirator) and grinding media consumables.
The standard XTB flows 508CFM while the ETB (which stands for "Economy/Entry Level Throttle Body" comes in at just over 462CFM. The ETB is CNC'd identically to the XTB however less than 30 minutes is spent on hand-work once the TB comes off the CNC mill. Normally an additional 4-5 hours is spent grinding, shaping, contouring and finishing the XTB, SXTB and an additional time/labor turning XTB/SXTB into a "+" series TB.
With DIY shaping/contouring any ETB could become closer to XTB spec, maybe even match their specs if someone knows a thing or two about flow. However the lifetime warranty offered with this throttle body goes out the window once it's been modified in ANY way other than the way it was delivered. Just too much risk for me to assume when others start hacking around on things. Now, with that said if it were me, I'd personally go for the additional flow as TB's are pretty much bullet-proof but I include this so there are no surprises down-the-road. All ETB's will be stamped with an "E" as in pic right next to the vacuum nipple as well as at least one other security mark to identify them to me in the event of warranty claim.
ETB's are purpose-built to a flow-spec and price-point only. They will out-flow any/all of the old bored/sleeved throttle bodies of yester-year as well as any/all still being manufactured today. Their CNC'd tapered velocity stack inlet virtually assures this. They cost less than the old sleeved TB's of 7 years ago and come with a new throttle body gasket and free USPS Priority Mail w/Delivery Confirmation US shipping as always is included in purchase price. All told that makes em over 20% less expensive than the lesser-flowing sleeved TB's of 7 years ago!
Cost is $195. A refundable $100 core charge is required if you want to purchase one but don't have an appropriate replacement throttle body core to send me at time of order. Once you replace your TB and send me a "CLEAN" useable core I will refund your $100 deposit without any associated fees taken from it whatsoever. If you don't clean your old TB before sending to me I will deduct a $20 cleaning charge. Far better/cheaper that YOU do the clean-up on it! Additionally, ALL ETB's are shipped without TPS's installed. Simply transfer your TPS to the ETB before sending me you core exchange. Again, the primary thrust here is to make them as inexpensive as possible and installing/adjusting the TPS to spec per Bentley takes time. Cheaper for you to do that than me.
Paypal is the only method of payment I accept as it's the safest payment method for BOTH of us. I will require 2 payments to be made separately; one for $195 purchase price and one for the $100 refundable deposit.
Since I don't have any expectations of how/if these will move I have intentionally limited my first production run to 10 only. Those are done and could ship immediately. If they move outta here quickly I'll make more. If not I'll limit production to a 5-piece minimum and only on an "as-needed" basis... maybe once/twice a year. Time will tell.
And please, no special requests on these. Ya know, things like "could ya do my "S" TB core this way" or "can I have my ETB all done up in the "+" spec?" These are one-size fits all and that's the ONLY way I can make them at this price, period! And once an ETB is sold it can NEVER be retro-cutomized by me to "any" other nomenclature throttle body or higher-flow specification. But unless you go internal on your 12V engine mods with things like 11:5 or higher compression pistons, larger valves and higher-than 272 duration/12mm lift cams you'll NEVER "need" more CFM than the ETB flows right outta-the-box! You might "want" more and I understand that sentiment completely. But you'll never "need" more.
It's just kinda the right throttle body at the right time.
02-22-2009, 11:39 AM
#4
AudiWorld Super User
Thread Starter
Pic 3, IMPORTANT!! Only 94.5 model year & later throttle bodies qualify for core exchange...
<center><img src="http://pictureposter.audiworld.com/711/corequalification.jpg"></center><p>
tho the ETB/XTB/SXTB will retro-fit any/all previous and later model year 12V engines in straight plug-n-play swap without modification. TB on left in pic qualifies as an acceptable core. TB on right does not! Small green check-marks show the 2 key elements to look for when comparing throttle bodies.
If someone's throttle body is missing "either" the aluminum TB shaft/spring cover plate "or" has the smaller cable pulley it is NOT an accdeptable TB for exchange. Any/all acceptable TB's MUST have BOTH to qualify as acceptable exchange units. Additionally no throttle body that has been modified in ANY way from it's original "as-installed by Audi" configuration will qualify as an acceptable exchange core.
tho the ETB/XTB/SXTB will retro-fit any/all previous and later model year 12V engines in straight plug-n-play swap without modification. TB on left in pic qualifies as an acceptable core. TB on right does not! Small green check-marks show the 2 key elements to look for when comparing throttle bodies.
If someone's throttle body is missing "either" the aluminum TB shaft/spring cover plate "or" has the smaller cable pulley it is NOT an accdeptable TB for exchange. Any/all acceptable TB's MUST have BOTH to qualify as acceptable exchange units. Additionally no throttle body that has been modified in ANY way from it's original "as-installed by Audi" configuration will qualify as an acceptable exchange core.
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02-24-2009, 06:48 AM
#9
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Is there a benefit summary for those of us that are ignorant?
Do I assume correctly that:
This is primarily for increased performance (HP) at RPMs above 3500
Would have marginal benefit with a stock air intake system
Or, more to the point of my desires......
I am looking to increase fuel economy. I have a 95A6 5sp 100% stock, getting 25~28MPG. Will this puppy do anything good for me? I have always wanted to hit 30MPG, but have always fallen short.
Woe is me.
Thanks for any direction
This is primarily for increased performance (HP) at RPMs above 3500
Would have marginal benefit with a stock air intake system
Or, more to the point of my desires......
I am looking to increase fuel economy. I have a 95A6 5sp 100% stock, getting 25~28MPG. Will this puppy do anything good for me? I have always wanted to hit 30MPG, but have always fallen short.
Woe is me.
Thanks for any direction
02-26-2009, 05:41 AM
#10
AudiWorld Super User
Thread Starter
Most here have reported MPG increases with induction mods be they TB, MAF or larger diameter...
induction hoses. Tho due to the inherent power increase they also say it's harder to keep their foot "out of it" when that occurs. Any/all intake tract obstructions/restrictions would necessarily influence mileage negatively as it's like running with the choke partially closed on a motorcycle/lawnmower engine. As far as power band and/or any RPM relationship whether real or perceived a better-flowing intake path could be considered the par equal to replacing a clogged or dirty air filter element. End-result is far better flow with an accompanying increase in HP/TQ at EVERY RPM! Less HP/TQ lost via vacuum required to pull the air into the combustion chamber at ALL RPMs.
A quick look-see at your sooty, black, puffy carboned-up exhaust tips will show you these cars are fueled fat as pigs from the factory. A little more air thru the system helps power, economy and mileage. If it didn't why would we EVER change an air filter!?! Especially since the more clogged they get the BETTER they are at filtration!
A quick look-see at your sooty, black, puffy carboned-up exhaust tips will show you these cars are fueled fat as pigs from the factory. A little more air thru the system helps power, economy and mileage. If it didn't why would we EVER change an air filter!?! Especially since the more clogged they get the BETTER they are at filtration!