19pis On Stock Engine/ic/injectors?
09-03-2003, 10:14 PM
#51
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Join Date: Apr 2003
Posts: 32
Originally Posted by j9fd3s' date='Sep 3 2003, 07:48 AM
[quote name='adamlewis' date='Sep 3 2003, 04:33 AM'] [Becuase Im trying to make you all aware to the fact that there exists a possibility that some things youve been told on here arent entirely true.
And the simple answer to my original question was NO ( as the first 3 people in this thread said ). It just goes to show that the collective thought of the stock injectors not being able to go past 11psi is WRONG. They can go much farther ( at least in my personal experience ).
Chalk it up as a fluke if you want to, but I ran the car that way all night for a good 3 hours. If it was going to blow up, I think it would have by then.
And the simple answer to my original question was NO ( as the first 3 people in this thread said ). It just goes to show that the collective thought of the stock injectors not being able to go past 11psi is WRONG. They can go much farther ( at least in my personal experience ).
Chalk it up as a fluke if you want to, but I ran the car that way all night for a good 3 hours. If it was going to blow up, I think it would have by then.
the 11psi limit has more to do with the stock ecu than it does with the injectors, the guys in austrailia run 14-15psi all day long on the stock 550's and an ecu. plus 10-11psi has the added benifit of being and easy and safe answer. its the same thing as the 3 mod rule on an fd, more than 3 mods and you lean out, until some one tested a few cars and found that they run pig rich all the time, no matter what
mike [/quote]
First off, good on ya for questioning things, its amazing how much wrong information flies around, just bear in mind that sometimes it is right.
Since we're talking facts here, I'll add that I've datalogged 80+% duty cycle on my stock ECU'd (well mostly stock ECU) S4 TII at redline and this is only around 7psi (K&N and downpipe). From what I can tell (conjecture not yet fact) the stock ECU targets an AFR in the mid 10's under boost at redline - pretty rich, so its a question of how much leaner than factory are you comfortable in going (since factory pretty much maxes the injectors with just minor mods).
One other thing, its not really PSI that matters its airflow. Its a fact that different turbo's can move very different amounts of air at the same PSI.
Henrik
09-03-2003, 11:20 PM
#52
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Join Date: Oct 2001
Location: Peoria, AZ
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Its all about who you take the info in from, I don't listen to anyone on rx7club, unless its riceracing/reted/evil availator/1fast2/scott89t2, and a select few others... Same goes around here, listen to those you have experience..
Get on the dyno already!!!!
Get on the dyno already!!!!
09-03-2003, 11:51 PM
#53
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Join Date: Jan 2003
Location: union, new jersey
Posts: 8,079
adam, you asked people what they think, and they gave you their opinions. you also asked if its possible, and obviously its possible to hit 19psi with your setup so there's your answer to that.......... i think the people that responded to you are merely saving you from having to replace your engine in the near future.
09-04-2003, 06:41 AM
#54
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Join Date: Dec 2001
Location: Louisville KY 40299
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Originally Posted by 1Revvin7' date='Sep 3 2003, 11:20 PM
Its all about who you take the info in from, I don't listen to anyone on rx7club, unless its riceracing/reted/evil availator/1fast2/scott89t2, and a select few others... Same goes around here, listen to those you have experience..
Get on the dyno already!!!!
Get on the dyno already!!!!
09-04-2003, 11:08 AM
#55
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Join Date: May 2002
Location: California
Posts: 22,465
Originally Posted by Henrik' date='Sep 3 2003, 07:14 PM
[quote name='j9fd3s' date='Sep 3 2003, 07:48 AM'] [quote name='adamlewis' date='Sep 3 2003, 04:33 AM'] [Becuase Im trying to make you all aware to the fact that there exists a possibility that some things youve been told on here arent entirely true.
And the simple answer to my original question was NO ( as the first 3 people in this thread said ). It just goes to show that the collective thought of the stock injectors not being able to go past 11psi is WRONG. They can go much farther ( at least in my personal experience ).
Chalk it up as a fluke if you want to, but I ran the car that way all night for a good 3 hours. If it was going to blow up, I think it would have by then.
And the simple answer to my original question was NO ( as the first 3 people in this thread said ). It just goes to show that the collective thought of the stock injectors not being able to go past 11psi is WRONG. They can go much farther ( at least in my personal experience ).
Chalk it up as a fluke if you want to, but I ran the car that way all night for a good 3 hours. If it was going to blow up, I think it would have by then.
the 11psi limit has more to do with the stock ecu than it does with the injectors, the guys in austrailia run 14-15psi all day long on the stock 550's and an ecu. plus 10-11psi has the added benifit of being and easy and safe answer. its the same thing as the 3 mod rule on an fd, more than 3 mods and you lean out, until some one tested a few cars and found that they run pig rich all the time, no matter what
mike [/quote]
One other thing, its not really PSI that matters its airflow. Its a fact that different turbo's can move very different amounts of air at the same PSI.
Henrik [/quote]
or the same turbo can move the same amount of air at the same psi.
mike
09-05-2003, 10:45 AM
#56
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Join Date: Dec 2001
Location: Louisville KY 40299
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data logged last night...
4640rpm, 15.0psi, 190F coolant temp, 100% throttle, 104F intake temp ( hows that for the shitty stock IC? ), 9.928ms IOT, 73% duty cycle, 16degrees advance.
Pretty suprising given the things Ive heard about how crappy the IC is and how the injectors arent good for much past 11psi...
Ah well...Maybe my car is just a fluke...or maybe Im just making this all up eh?
Well theres the data. Believe it if you want...call it crap if you want. I dont really care one way or the other. My car will still be running strong regardless of what some people know as their "truth"
4640rpm, 15.0psi, 190F coolant temp, 100% throttle, 104F intake temp ( hows that for the shitty stock IC? ), 9.928ms IOT, 73% duty cycle, 16degrees advance.
Pretty suprising given the things Ive heard about how crappy the IC is and how the injectors arent good for much past 11psi...
Ah well...Maybe my car is just a fluke...or maybe Im just making this all up eh?
Well theres the data. Believe it if you want...call it crap if you want. I dont really care one way or the other. My car will still be running strong regardless of what some people know as their "truth"
09-05-2003, 01:54 PM
#58
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Join Date: Oct 2001
Location: Peoria, AZ
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Originally Posted by 1987rx7guy' date='Sep 5 2003, 11:42 AM
What was your AFR's for that run? Why didn't you try to go for 16PSI if you still have more injector cap. left? What was the HP and Tq for that run? Give us all the info
Thats just a datalog.
Adam-
Somone on here did some good testing of the stock ic, and it proved a lot better than what most people though. What was the oustide temp? What gear/mph? Can you get the rpms any higher?
I forgot off hand howto convert a datalog to a txt file and upload it to the forum, I'll have to goto to the car and check it out. I remember off hand hitting Print to file, but its finicky on windows and never allows me to change over more than 10pages of datalog...
09-05-2003, 02:08 PM
#59
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Originally Posted by 1Revvin7' date='Sep 5 2003, 01:54 PM
I don't believe he has a wideband, he wasn't on a dyno either....
Thats just a datalog.
Adam-
Somone on here did some good testing of the stock ic, and it proved a lot better than what most people though. What was the oustide temp? What gear/mph? Can you get the rpms any higher?
I forgot off hand howto convert a datalog to a txt file and upload it to the forum, I'll have to goto to the car and check it out. I remember off hand hitting Print to file, but its finicky on windows and never allows me to change over more than 10pages of datalog...
Thats just a datalog.
Adam-
Somone on here did some good testing of the stock ic, and it proved a lot better than what most people though. What was the oustide temp? What gear/mph? Can you get the rpms any higher?
I forgot off hand howto convert a datalog to a txt file and upload it to the forum, I'll have to goto to the car and check it out. I remember off hand hitting Print to file, but its finicky on windows and never allows me to change over more than 10pages of datalog...
If you tell me how to convert the whole thing into a txt file, I can upload that...
09-05-2003, 02:42 PM
#60
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Join Date: Oct 2001
Location: Peoria, AZ
Posts: 10,906
As you are viewing the datalog, with the haltech program open/running, hit P for Print, then hit print to File, hit # of pages starting and ending. THen hit any button, you should then see a txt file on your desktop.. I have no idea about DOS...