|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 2003
Posts: 7
|
944 performance upgrade
I have a 1984 Porsche 944 n/a and have done some modest performance upgrades - K&N Air filter, 9mm wires, high output coil, free flow exhaust. I am considering upgrading my fuel injectors to get more fuel in the cylinders and hopefully more horsepower. Do late model or Turbo injectors improve HP? Whats the difference between the early model, late model and turbo injectors?
Thanks |
||
10-09-2005, 06:18 PM
|
|
|
Registered
Join Date: Aug 2001
Location: Brighton UK since 11/2012
Posts: 3,170
|
None of that will make any difference, use the FRWilk chip, AFTER you have done the timing belt, water pump, oil cooler seals, suspension and tires....
__________________
From November 2012; Precision Porsche Specialist Sussex UK, +44 (0)1825-721-205 2001-2012 Gerber Motorsport Inc. 206-352-6911 07.15.06 1996 Ducati 900SP. Suprisingly enough, it's red 08.16.09 1999 Kawasaki ZRX1100. Green. |
||
|
10-09-2005, 07:22 PM
|
|
|
Registered
|
I wouldnt bother with different injectors, You do not need them and you wont see any HP gain, The only reason to be adding more fuel is if you are adding more air ex. MAF conversion, Turbo, SC. Other then that on a NA setup the stock injectors can flow more then enought fuel. If your looking for better performance get FR-wilks Power Prom 2 chip, best bang for the buck
__________________
1986 951, Stock for now. ]87 924S Gaurds red- SOLD after 11 years of ownership |
||
|
10-09-2005, 07:45 PM
|
|
|
Writer/Teacher
|
putting freer-flowing injectors - or a freer-flowing air filter, for that matter - will do JACK SQUAT if the air/fuel computer's programming isn't altered. The engine will only allow what the computer demands... which brings us to the best 944 upgrade available:
FRWilk's PowerProm chip. It is absolutely amazing. Order it now, because you have a 1984 car and he is ceasing production of the early car adapter board soon.
__________________
Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
||
|
10-09-2005, 07:57 PM
|
|
|
Ornery Bastard
Join Date: Sep 2001
Location: South Sound
Posts: 2,879
|
From what you've done already, you're looking at maybe, on a good day, under the best conditions, an extra 2 to 5 hp near redline. Probably lost some low-end torque with that exhaust "upgrade" though so net/net you're looking at no real gain. Bigger injectors will only make you run too rich and foul plugs.
Aaron
__________________
--------- Silver 1998 Volvo S70 T5 <- Daily (Anja) Guards Red 1986 951 <- Seattle car (Gretchen) White 1976 914 2.0 F.I. <- Prodigal car, traded away then brought back again (Lorelei) |
||
|
10-09-2005, 08:18 PM
|
|
|
Writer/Teacher
|
well, what those upgrades WILL do is make the ignition system run more efficiently. So, in situations where other cars might loose power due to ineffecient firing, with those upgrades he won't lose that power.
Still, all that money could have been put in to a PowerProm, which would have yielded a much higher net gain in performance.
__________________
Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
||
|
10-09-2005, 09:01 PM
|
|
|
|
Registered
Join Date: Sep 2005
Posts: 60
|
so what upgrades do i NEED to have one of the FRWilk's PowerProm chips? i know ill need the EPROm adapter but do i have to upgrade any injectors etc?
Last edited by WaFfscles; 10-09-2005 at 10:21 PM.. |
||
|
10-09-2005, 10:16 PM
|
|
|
That Guy
|
All you need to do is make sure your car is up to date maitenence wise. No need to change anything else.
__________________
Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 |
||
|
10-09-2005, 10:42 PM
|
|
|
Registered
Join Date: Sep 2005
Posts: 60
|
RICHOUS!
|
||
|
10-09-2005, 10:57 PM
|
|
|
Registered
Join Date: Sep 2005
Location: Connecticut
Posts: 258
|
how much more horsepower is added with the frwilks powerprom? I have an 84 944 and was thinking about buying something to increase power.
Marian
__________________
1984 Porsche 944 |
||
|
10-10-2005, 05:19 AM
|
|
|
Writer/Teacher
|
not much at peak, but a lot in the low-end. You really feel the car pull a lot stronger from low RPM. There are dyno charts somewhere in this forum, do a search.
__________________
Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
||
|
10-10-2005, 06:59 AM
|
|
|
That Guy
|
In reality you get no more than 2-3 HP that shows up on a dyno. Of course you may say you get that type of varitation between dyno runs!
The difference you do see on the dyno is the powerband, which starts at a much lower rpm compared to running without the chip. This is achieved by changing the fuel maps and advancing ignition. All that extra 'umph' you feel after ~3500+ rpms you feel in my opinion just under ~2500rpms. Makes the car much more 'driveable' so to speak. In my opinion the two top drivability upgrades you could do (only top two...because thats all thats available for our cars really!) are the FR Wilk chip and the circular throttle cam. The throttle cam really increases the response of the engine, mostly because you are going to a more direct relationship between pedal travel and throttle body movement.
__________________
Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 |
||
|
10-10-2005, 08:14 AM
|
|
|
|
Registered
|
I see in a lots of sites the throtle cam .. that's a good upgrade .. ?
__________________
David Alonso De La Vega Tapage Panama 944 Turbo |
||
|
10-10-2005, 12:45 PM
|
|
|
Registered
|
Speaking of FR Wilks upgrades....what's the story on his new MAF that was supposed to be out??
__________________
10 E92 M3 13 Jeep GC Limited 98 Jeep Cherokee 87 951 C3 Stingray |
||
|
10-10-2005, 01:17 PM
|
|
|
Writer/Teacher
|
Quote:
__________________
Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
||
|
10-10-2005, 02:32 PM
|
|
|
Registered
Join Date: Dec 2004
Location: texas
Posts: 455
|
Quote:
 it makes it really hard to shift smoothly into second.
__________________
keep the dream alive! 1988 944 NA (purple) |
||
|
10-10-2005, 04:11 PM
|
|
|
Ornery Bastard
Join Date: Sep 2001
Location: South Sound
Posts: 2,879
|
Quote:
__________________
--------- Silver 1998 Volvo S70 T5 <- Daily (Anja) Guards Red 1986 951 <- Seattle car (Gretchen) White 1976 914 2.0 F.I. <- Prodigal car, traded away then brought back again (Lorelei) |
||
|
10-10-2005, 07:01 PM
|
|
|
Ornery Bastard
Join Date: Sep 2001
Location: South Sound
Posts: 2,879
|
Quote:
__________________
--------- Silver 1998 Volvo S70 T5 <- Daily (Anja) Guards Red 1986 951 <- Seattle car (Gretchen) White 1976 914 2.0 F.I. <- Prodigal car, traded away then brought back again (Lorelei) |
||
|
10-10-2005, 07:02 PM
|
|
|
Registered
Join Date: Aug 2004
Location: Washington state
Posts: 68
|
The throttle cam is awsome, I did mine buy drilling the stock one out.
It dosen't give you more power but it feels awsome, I will never go back. Do a search for throttle cam to see how to do it yourself, or buy one for $29.95. Its worth it if your not mechanical.
__________________
Learn to wish that everything should come to pass exactly as it does. |
||
|
10-10-2005, 07:03 PM
|
|
|
Registered
|
Quote:
__________________
David Alonso De La Vega Tapage Panama 944 Turbo |
||
|
10-11-2005, 06:03 AM
|
|
1987 Porsche 924S 2.5 modified
2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
The Kraut Burner
The Bratwurst Burner
Das Boost
1987 Porsche 951 M44/51
951
Jeep XJ
M3
Baby Hauler
C3 Stingray
