Dynoed my FD
07-28-04, 09:43 PM
#1
Senior Member
Thread Starter
Join Date: Jul 2004
Location: tucson
Posts: 351
Likes: 0
Received 0 Likes
on
0 Posts
Dynoed my FD
I made some passes on the dyno today : 382 RRHWP & 285 TORQUE @12psi. I was having fuel ( 88% injector duty) issues so I couldnt turn the boost up higher.
Matt
Matt
07-29-04, 12:10 AM
#4
Rotary Freak
Join Date: Feb 2001
Location: fort worth, tx, usa
Posts: 1,926
Likes: 0
Received 0 Likes
on
0 Posts
Hey Matt,
Great dyno #'s!! It was nice to know that the race port works out afterall.
I think you told me on the phone that you made 360rwhp at 10psi of boost? is it right?
Great dyno #'s!! It was nice to know that the race port works out afterall.
I think you told me on the phone that you made 360rwhp at 10psi of boost? is it right?
Originally Posted by AZ'sFastFD3S
I made some passes on the dyno today : 382 RRHWP & 285 TORQUE @12psi. I was having fuel ( 88% injector duty) issues so I couldnt turn the boost up higher.
Matt
Matt
Those are great numbers at that boost level.
Trending Topics
07-29-04, 09:21 AM
#9
Rebreaking things
Join Date: Jun 2001
Location: 1 foot in Boston 1 in NJ
Posts: 2,586
Likes: 0
Received 0 Likes
on
0 Posts
Assuming the pump can maintain a fuel pressure gradient of 40psi you should have enough capacity for approximately 480rwhp with those injectors. What kind of fuel pump are you using?
07-29-04, 05:45 PM
#10
Senior Member
Thread Starter
Join Date: Jul 2004
Location: tucson
Posts: 351
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by CCarlisi
Assuming the pump can maintain a fuel pressure gradient of 40psi you should have enough capacity for approximately 480rwhp with those injectors. What kind of fuel pump are you using?
Matt
07-29-04, 06:45 PM
#13
Weird Cat Man
I'm using the ND pump from RX7store... and I agree with radkins. I'm right around 410 rwhp, and I'm seeing the fuel pressure dropping slightly at high rpm/high load. I can "tune around" it by just increasing my injectory duty, but there's no way I'd turn up the boost and make more power without redoing my fuel system.
07-29-04, 07:20 PM
#14
I was able to squeese nearly 470 out of my ND pump and we quite there. I'm currently arguing with myself over twin ND's or an external.....
Still, very nice numbers Matt. I'm trying to get ahold of some of my other sheets for the lower boost graphs
-C
Still, very nice numbers Matt. I'm trying to get ahold of some of my other sheets for the lower boost graphs
-C
07-29-04, 11:11 PM
#17
Senior Member
Thread Starter
Join Date: Jul 2004
Location: tucson
Posts: 351
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Wargasm
Got any more specs on your turbo such as exhaust A/R or wheel trim?
All I know is that it is a Turbonetics 62-1, with a .84 exhaust housing.
07-30-04, 03:41 AM
#19
Originally Posted by Wargasm
I can "tune around" it by just increasing my injectory duty
-Max
07-30-04, 01:30 PM
#21
Weird Cat Man
Originally Posted by maxcooper
I assume you know this, but so people don't get the idea that you can safely tune around an inadequate fuel pump. You can't really tune around it, because doing so will make your car run lean when you turn the headlights on, the stereo up, or use the defroster. It makes your fuel map dependent on a certain electrical load. If you expect to lose 5 psi of fuel pressure because the pump isn't up to the task, you might get that most of the time. But if you turn the headlights on, you might lose 7 psi. Or if you hang around and play your stereo for a while with the engine off in front of someone's house, you might be down 15 psi if you boost after you get back on the road. One of the things the fuel pressure regulator does is eliminate the effect that electrical load would otherwise have on fuel delivery. So long as your fuel pump is adequate and can delivery the neccessary flow at the pressure the regulator wants, you can turn your headlights, stereo, defroster, A/C, etc. on and off and it won't change the amount of fuel delivered the engine. The regulator is holding the fuel pressure constant.
-Max
-Max
07-30-04, 04:37 PM
#22
Senior Member
Join Date: Feb 2002
Location: Sweden
Posts: 281
Likes: 0
Received 0 Likes
on
0 Posts
Nice numbers man! What AFR ratio are you running on WOT and whats your ignition settings on 12 psi high rpms? L and T.
I recognise that fuel issue. I to run that fuelpump and ran 100% on my 4*850:s on 14psi. I had 11.2 Volts on my pump, rewired with a nice relay in the back and got 13.8 volts all the time. That made the difference. I then replaced the fuelfilter with few miles for a better flowing one and now my fuel issues are gone. I do think the issue will come back with my new bigger sec. injectors and higher fuel pressure but the kenne bell boost up pump that I will install should make the difference.
I recognise that fuel issue. I to run that fuelpump and ran 100% on my 4*850:s on 14psi. I had 11.2 Volts on my pump, rewired with a nice relay in the back and got 13.8 volts all the time. That made the difference. I then replaced the fuelfilter with few miles for a better flowing one and now my fuel issues are gone. I do think the issue will come back with my new bigger sec. injectors and higher fuel pressure but the kenne bell boost up pump that I will install should make the difference.
07-30-04, 06:27 PM
#23
Senior Member
Thread Starter
Join Date: Jul 2004
Location: tucson
Posts: 351
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by pluto
Hey Matt,
Is that a 3rd gear pull or 4th gear since it looks too laggy to e 4th gear??
Is that a 3rd gear pull or 4th gear since it looks too laggy to e 4th gear??
That graph was a thrid gear pull. I did do some 4th gear pulls, but at that boost it felt like I was taking along time doing that pull. Also when I was doing the pulls I watched the boost gauge and the boost was surging at .90 bar then down then up etc...... Like the car wanted more boost, alot more. The PFC commander boost was reading .84 bar .
