I'm sure most of you thought this day would never come, but I finally upgraded fueling!

PSmalls::DoggieStyle · 07-20-2005, 11:05 PM

I decided to go with Bluetops@5bar (~488cc/min) and a RS4 MAF converted for use with Hitachi sensor. Thanks to Piggie and Poppa Piggie for the kickass parts. It's unreal how stock looking the entire setup is, especially the airbox to MAF housing connection. Here is a picture:

Of course, I did some preliminary testing. Piggie thought I was crazy testing and tweaking in the rain, but I couldn't help myself. After spending a little while tweaking, I decided on these Lemmi settings:

I still need to pull more fuel, as evidenced by the graphs to follow, but other than that the car feels absolutely great. The car still drives and idles exactly like it did on stock injectors. The only difference I've noticed is a more pronounced whoosh coming from the intake (stock airbox with stock filter and darintake hole).

Now, onto the fun stuff. Lots of graphs:

~21.5 psi peak boost tapering to ~20 psi near redline....

A bit rich if you ask me....

Curious to see how they change when I pull a bit more fuel....

Boy, it sure is nice to finally have some headroom....

Coming soon: 3.x second FATS times with no rain, no AC, and more fuel pulled back.

As always, comments/questions are welcome and sorry for boring you all.

FrozenS4 · 07-20-2005, 11:19 PM

MBC in parallel I assume ? So you are running X and pulled some fueling and added some timing ? And last why did you go with the bluetops instead of RS 4 injectors besides price ?

SLPR S4 · 07-20-2005, 11:33 PM

change my mind like the wind.

)

Can't wait for a ride in the blue balled beastie!

PSmalls::DoggieStyle · 07-20-2005, 11:43 PM

I am running X chip with 5% primary fuel pulled back and 1.5 degrees of timing added, yes.

I went with Bluetops instead of RS4 injectors purely because of price. I purchased 8 Blutop injectors for $175 shipped, about the price of 1-2 RS4 injectors.

PSmalls::DoggieStyle · 07-20-2005, 11:43 PM

PSmalls::DoggieStyle · 07-20-2005, 11:45 PM

Then, I could run more boost with lower shaft speeds (higher efficiency).

I'll definitely be documenting a lot of testing, that's for sure.

FrozenS4 · 07-20-2005, 11:56 PM

internecine · 07-21-2005, 12:08 AM

i know you upgraded because your pump had failed. but had the stocker not failed and there were no problems with its reliability, an upgrade would not be needed?

under a different scenario, if you didnt have a 5 bar fpr would the walbro compensate for this? is one not needed if the other is installed?

VerrÜckt · 07-21-2005, 01:12 AM

lemieux@curbside · 07-21-2005, 05:46 AM

btw does the blue top injector spray look closer to an rs4 or stock .. is it an actual spray or a "piss in the wind" like the green tops .
and what size is the maf 83 mm ?
that really looks like a good match injectors-maf and runing well with minimum tweaking on the X chip.

07-20-2005, 11:05 PM	#1
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	I'm sure most of you thought this day would never come, but I finally upgraded fueling! I decided to go with Bluetops@5bar (~488cc/min) and a RS4 MAF converted for use with Hitachi sensor. Thanks to Piggie and Poppa Piggie for the kickass parts. It's unreal how stock looking the entire setup is, especially the airbox to MAF housing connection. Here is a picture: Of course, I did some preliminary testing. Piggie thought I was crazy testing and tweaking in the rain, but I couldn't help myself. After spending a little while tweaking, I decided on these Lemmi settings: I still need to pull more fuel, as evidenced by the graphs to follow, but other than that the car feels absolutely great. The car still drives and idles exactly like it did on stock injectors. The only difference I've noticed is a more pronounced whoosh coming from the intake (stock airbox with stock filter and darintake hole). Now, onto the fun stuff. Lots of graphs: ~21.5 psi peak boost tapering to ~20 psi near redline.... A bit rich if you ask me.... Curious to see how they change when I pull a bit more fuel.... Boy, it sure is nice to finally have some headroom.... Coming soon: 3.x second FATS times with no rain, no AC, and more fuel pulled back. As always, comments/questions are welcome and sorry for boring you all.

07-20-2005, 11:19 PM	#2
FrozenS4 Junior Member Garage is empty, add now Join Date: Dec 2004 Posts: 587	Questions MBC in parallel I assume ? So you are running X and pulled some fueling and added some timing ? And last why did you go with the bluetops instead of RS 4 injectors besides price ?

07-20-2005, 11:33 PM	#3
SLPR S4 Member Garage is empty, add now Join Date: Jul 2003 Posts: 4,378	CONGRATS MAN!!!! Glad you made the leap. I say I won't go past Stage 3-, but you know how I ... change my mind like the wind. ) Can't wait for a ride in the blue balled beastie! __________________

07-20-2005, 11:43 PM	#4
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	I am MBC only actually. I really like the MBC only setup. I am running X chip with 5% primary fuel pulled back and 1.5 degrees of timing added, yes. I went with Bluetops instead of RS4 injectors purely because of price. I purchased 8 Blutop injectors for $175 shipped, about the price of 1-2 RS4 injectors.

07-20-2005, 11:43 PM	#5
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	Thanks, man. You'll definitely get a ride.

07-20-2005, 11:45 PM	#6
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	You can really feel the extra few pounds of boost! It's truly awesome. I just wish I had those brids Then, I could run more boost with lower shaft speeds (higher efficiency). I'll definitely be documenting a lot of testing, that's for sure.

07-20-2005, 11:56 PM	#7
FrozenS4 Junior Member Garage is empty, add now Join Date: Dec 2004 Posts: 587	Thanks and congrats on your new set up.

07-21-2005, 12:08 AM	#8
internecine AudiWorld Super User Garage is empty, add now Join Date: Dec 2003 Posts: 5,819	so is the walbro fuel pump still unnecessary? i know you upgraded because your pump had failed. but had the stocker not failed and there were no problems with its reliability, an upgrade would not be needed? under a different scenario, if you didnt have a 5 bar fpr would the walbro compensate for this? is one not needed if the other is installed?

07-21-2005, 01:12 AM	#9
VerrÜckt AudiWorld Super User Garage is empty, add now Join Date: Feb 2003 Posts: 16,414	I've been running nearly the same setup for about a year on the stock pump.

07-21-2005, 05:46 AM	#10
lemieux@curbside AudiWorld Super User Garage is empty, add now Join Date: Dec 2002 Posts: 17,781	where did you buy the blue tops , TIA ! i may go in the same direction. btw does the blue top injector spray look closer to an rs4 or stock .. is it an actual spray or a "piss in the wind" like the green tops . and what size is the maf 83 mm ? that really looks like a good match injectors-maf and runing well with minimum tweaking on the X chip. __________________ ************************************************ ************************************* "it's a B5 S4 ,it may break down, but its far enough ahead, by the time its fixed, you still haven't caught up." -best line i've heard AUDI B5 S4 detail info (pdf file) that everyone should read and have saved on his computer AUDI B5 RS4 study guide detail info (pdf file) FATS database VAG-COM LOCATOR ASP Hands down the "BESTEST" tuner out there.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode


Discussion Forums:

07-21-2005, 05:46 AM
AudiWorld Audi R8 Paid Advertisement