Are there any injectors that will fit rs4 mani and rs4 fuel rail - Page 4

JBear::FATS · 09-06-2005, 10:36 AM

, especially 91. He must be moving alot of air, hybrids I assume ?

Bad fuel pump ?

PSmalls::DoggieStyle · 09-06-2005, 10:46 AM

It could very well be something wrong with his car. I wouldn't be suprised at all. The fact still remains that for wahtever reason he has a lack of fuel.

As for a bad fuel pump, I've seen a few fail and they always resulted in a tapering 02 voltage log. His is linear and low across the board. It could be, though.

IIRC, Simpply built this motor from scratch with lots of different parts not included in AWE kit. Who knows what's wrong!? :-/

Ah10@WMS · 09-06-2005, 11:25 AM

but yet getting alot of air so not enough fuel? just a guess!

PSmalls::DoggieStyle · 09-06-2005, 11:26 AM

Mike2kS4 · 09-06-2005, 12:38 PM

O2's get very inaccurate past .88 .

Ah10@WMS · 09-06-2005, 12:57 PM

say the one using 85mm vs 88mm or 90mm?

PSmalls::DoggieStyle · 09-06-2005, 12:58 PM

Mike2kS4 · 09-06-2005, 01:01 PM

AWE software and MAF should work great with RS4 squirters with minor tweaks on K04's. Something's amiss here, but it's not with any of those items, imo.

BUT, if someone want's to get larger fueling I'm all for it.

Ah10@WMS · 09-06-2005, 01:16 PM

to a point that it will max out the maf sensor say in the north side of 300g/sec and that is the whole point of using larger Maf housing to scale down the reading and yet get enough air flow! now i guess my question is:

1. the higher the number on maf reading the more fuel it will spray.

2. the larger the maf housing is, it will scale down maf reading not necessary less air

am i on the right track or totally wrong? please help!

PSmalls::DoggieStyle · 09-06-2005, 01:21 PM

Bigger housings results in lower airflow readings for same amount of air.

09-06-2005, 10:36 AM	#31
JBear::FATS Senior Member Garage is empty, add now Join Date: Sep 2000 Posts: 4,424	Something seems off, there are many cars running the RS4 injectors @ 4 bar with plenty of fuel , especially 91. He must be moving alot of air, hybrids I assume ? Bad fuel pump ? __________________ ________________________________________ 2001 S4 6-Speed Santorin Engine/Drivetrain: ASP Custom Tuned Stage III Fueling, RS4 Y-Pipe/Clutch/Fuel Pump/IC's, X1 Intake, Samco F-Hose, APR Bi-Pipe, Piggie Pipes, Miltek Single, AWE DTS, APR Snub, TG SS, VAST Water/Meth Kit. Suspension/Brakes: Vogtland GT, Neuspeed Rear Swaybar (Med), Stoptech 332 BBK. Exterior: 18" BBS CH, M3 Lip Spoiler, SPP Foglight Bulbs, RS4 Grill, E-Codes. Interior: UUC Alcantata Boot, TwinData EFU, Strat S4 Logo Floor Mats, HW V1, PhatBox.

09-06-2005, 10:46 AM	#32
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	K16 hybrids flowing ~250 g/s in AWE MAF. I've seen more airflow on RS4s@4bar.... It could very well be something wrong with his car. I wouldn't be suprised at all. The fact still remains that for wahtever reason he has a lack of fuel. As for a bad fuel pump, I've seen a few fail and they always resulted in a tapering 02 voltage log. His is linear and low across the board. It could be, though. IIRC, Simpply built this motor from scratch with lots of different parts not included in AWE kit. Who knows what's wrong!? :-/

09-06-2005, 11:25 AM	#33
Ah10@WMS AudiWorld Super User Garage is empty, add now Join Date: Aug 2000 Posts: 7,611	do you think it is his Maf housing too big, scale down air flow too much but yet getting alot of air so not enough fuel? just a guess! __________________ WMS: 818-997-6500 ASP:856-772-9500 \|\| ASP Custom Tuned Stage 3 \|\| 710P \|\| Piggie DP \|\| ASP 89mm Truedual \|\| ASP TSB \|\| APR Boost Gauge \|\| RS4 Grille \|\| \|\| AWE Intercooler \|\| C M Stage 4, 6 puck & LWFW \|\| ASP Motor Mount \|\| RS4 Tranny Mount\|\| StaSIS Motorsport Ohlins \|\| \|\| 18" Work W-ITS 901 \|\| 245/35/18 ContiSport3 \|\| Ecode \|\| Modded RS4 Bumper \|\| StaSIS Motorsport Alcon 6pot 355 \|\| WMS Stage III: 3.54 fats on Pump 3.25 fats on Race gas both runs were on pump file 3.06 on East Coast Pump Gas/Race File 2.93 on East Coast Pump Gas/Race File in 40f weather

09-06-2005, 11:26 AM	#34
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	No! If that were teh case, everyone with AWE kit would have this problem.

09-06-2005, 12:38 PM	#35
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	Yea, they need more richitude. Seriously, if I lived there I'd get a wideband. O2's get very inaccurate past .88 . __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-06-2005, 12:57 PM	#36
Ah10@WMS AudiWorld Super User Garage is empty, add now Join Date: Aug 2000 Posts: 7,611	True but is that the normal guideline on homebrew? say the one using 85mm vs 88mm or 90mm? __________________ WMS: 818-997-6500 ASP:856-772-9500 \|\| ASP Custom Tuned Stage 3 \|\| 710P \|\| Piggie DP \|\| ASP 89mm Truedual \|\| ASP TSB \|\| APR Boost Gauge \|\| RS4 Grille \|\| \|\| AWE Intercooler \|\| C M Stage 4, 6 puck & LWFW \|\| ASP Motor Mount \|\| RS4 Tranny Mount\|\| StaSIS Motorsport Ohlins \|\| \|\| 18" Work W-ITS 901 \|\| 245/35/18 ContiSport3 \|\| Ecode \|\| Modded RS4 Bumper \|\| StaSIS Motorsport Alcon 6pot 355 \|\| WMS Stage III: 3.54 fats on Pump 3.25 fats on Race gas both runs were on pump file 3.06 on East Coast Pump Gas/Race File 2.93 on East Coast Pump Gas/Race File in 40f weather

09-06-2005, 12:58 PM	#37
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	I'm not really following. It should never be an issue.

09-06-2005, 01:01 PM	#38
Mike2kS4 AudiWorld Super User Garage is empty, add now Join Date: Jun 2002 Posts: 12,096	That shouldn't be an issue... AWE software and MAF should work great with RS4 squirters with minor tweaks on K04's. Something's amiss here, but it's not with any of those items, imo. BUT, if someone want's to get larger fueling I'm all for it. __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-06-2005, 01:16 PM	#39
Ah10@WMS AudiWorld Super User Garage is empty, add now Join Date: Aug 2000 Posts: 7,611	i guess my question is, is it true that with K04 it sucks in so much air to a point that it will max out the maf sensor say in the north side of 300g/sec and that is the whole point of using larger Maf housing to scale down the reading and yet get enough air flow! now i guess my question is: 1. the higher the number on maf reading the more fuel it will spray. 2. the larger the maf housing is, it will scale down maf reading not necessary less air am i on the right track or totally wrong? please help! __________________ WMS: 818-997-6500 ASP:856-772-9500 \|\| ASP Custom Tuned Stage 3 \|\| 710P \|\| Piggie DP \|\| ASP 89mm Truedual \|\| ASP TSB \|\| APR Boost Gauge \|\| RS4 Grille \|\| \|\| AWE Intercooler \|\| C M Stage 4, 6 puck & LWFW \|\| ASP Motor Mount \|\| RS4 Tranny Mount\|\| StaSIS Motorsport Ohlins \|\| \|\| 18" Work W-ITS 901 \|\| 245/35/18 ContiSport3 \|\| Ecode \|\| Modded RS4 Bumper \|\| StaSIS Motorsport Alcon 6pot 355 \|\| WMS Stage III: 3.54 fats on Pump 3.25 fats on Race gas both runs were on pump file 3.06 on East Coast Pump Gas/Race File 2.93 on East Coast Pump Gas/Race File in 40f weather

09-06-2005, 01:21 PM	#40
PSmalls::DoggieStyle Elder Member Garage is empty, add now Join Date: Jan 2004 Posts: 30,257	Yes, you're absolutely right. We scale MAFs and injectors because they are our limiting factors.... Bigger housings results in lower airflow readings for same amount of air.

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