19pis On Stock Engine/ic/injectors?
09-01-2003, 09:17 PM
#21
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Originally Posted by adamlewis' date='Sep 1 2003, 08:57 PM
[quote name='1Revvin7' date='Sep 1 2003, 11:43 AM'] [quote name='adamlewis' date='Sep 1 2003, 11:26 AM'] [quote name='1Revvin7' date='Sep 1 2003, 01:11 AM'] [quote name='adamlewis' date='Sep 1 2003, 12:19 AM'] 11psi? 
I think its safe to assume youve never had your car past 11psi, eh?
I think its safe to assume youve never had your car past 11psi, eh?
Yea you can run more than 11psi, but you'll go lean fast.
I have drove a t2 at 15psi, with just a fuel pump.. Guess what? It blew a week later....
If you think im full of ****, go ahead run 19psi on basically stock fuel system, LOL
My car has ran at 15psi for a good while and its still running strong.
And I did run 19psi. It felt really nice. I wanted to do it some more but thought better of it. [/quote]
I wish I could afford to experiment like that
"Cartech found that the large injectors and the aggressive fuel curve afforded by the stock EFI rendered a correct air/fuel mixture to a level of about 8 psi without lowering discharge temperatures; with other improvements, it was possible to run safely to the 11 psi range before additional modification to the fuel system was required. "
Grassroots Article
These guys know what they are talking about.. But then again this was with a stock ecu, I bet the stock ecu can't push the injectors past 65% duty cycle, or maybe i'm just wrong...
But this got me curious, I believe 550 x 4 x 85% s/b enough fuel for about 280rhwp... stock motor/turbo 280rhwp would be near like 17psi...
Can you get on a dyno or do you have access to a wb o2? [/quote]
Yeah. Im taking it to a dyno this friday. Its going to be running 15psi then. [/quote]
Sweet.
09-01-2003, 09:20 PM
#22
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Originally Posted by 1Revvin7' date='Sep 1 2003, 09:17 PM
[quote name='adamlewis' date='Sep 1 2003, 08:57 PM'] [quote name='1Revvin7' date='Sep 1 2003, 11:43 AM'] [quote name='adamlewis' date='Sep 1 2003, 11:26 AM'] [quote name='1Revvin7' date='Sep 1 2003, 01:11 AM'] [quote name='adamlewis' date='Sep 1 2003, 12:19 AM'] 11psi?
I think its safe to assume youve never had your car past 11psi, eh?
I think its safe to assume youve never had your car past 11psi, eh?
Yea you can run more than 11psi, but you'll go lean fast.
I have drove a t2 at 15psi, with just a fuel pump.. Guess what? It blew a week later....
If you think im full of ****, go ahead run 19psi on basically stock fuel system, LOL
My car has ran at 15psi for a good while and its still running strong.
And I did run 19psi. It felt really nice. I wanted to do it some more but thought better of it. [/quote]
I wish I could afford to experiment like that
"Cartech found that the large injectors and the aggressive fuel curve afforded by the stock EFI rendered a correct air/fuel mixture to a level of about 8 psi without lowering discharge temperatures; with other improvements, it was possible to run safely to the 11 psi range before additional modification to the fuel system was required. "
Grassroots Article
These guys know what they are talking about.. But then again this was with a stock ecu, I bet the stock ecu can't push the injectors past 65% duty cycle, or maybe i'm just wrong...
But this got me curious, I believe 550 x 4 x 85% s/b enough fuel for about 280rhwp... stock motor/turbo 280rhwp would be near like 17psi...
Can you get on a dyno or do you have access to a wb o2? [/quote]
Yeah. Im taking it to a dyno this friday. Its going to be running 15psi then. [/quote]
Sweet. [/quote]
Ill post the numbers when i get back but Im not really going for the par numbers. Just really care about tuning the A/F and Ign. Its on a mustang dyno anyways
09-01-2003, 09:25 PM
#23
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Yea, I just read the same thread at rx7club, I figured there was multiple topics, anyhow, someone said on their microtech they were seeing 90% duty cycle on the stock fuel system at 11psi, isn't that hard enough data for you that you are running lean?
09-01-2003, 09:43 PM
#24
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Location: IL
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Originally Posted by 1Revvin7' date='Sep 2 2003, 02:25 AM
Yea, I just read the same thread at rx7club, I figured there was multiple topics, anyhow, someone said on their microtech they were seeing 90% duty cycle on the stock fuel system at 11psi, isn't that hard enough data for you that you are running lean?
09-01-2003, 10:16 PM
#26
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Originally Posted by adamlewis' date='Sep 1 2003, 06:11 PM
Yeah. Like I said, Ive been running 15psi for a while now and have absolutely no problems. No low compression, no smoke under boost/vacuum, perfect rock steady idle, no shaft play...I mean the car is perfect.
I think the car is tougher than you all think...
And Ive still yet to see any real data about how much air the HT-18 flows...Or how efficiently it does it.
I think the car is tougher than you all think...
And Ive still yet to see any real data about how much air the HT-18 flows...Or how efficiently it does it.
mike
09-02-2003, 01:30 AM
#28
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Originally Posted by 1Revvin7' date='Sep 1 2003, 09:25 PM
Yea, I just read the same thread at rx7club, I figured there was multiple topics, anyhow, someone said on their microtech they were seeing 90% duty cycle on the stock fuel system at 11psi, isn't that hard enough data for you that you are running lean?
Besides, duty cycle is worthless without a A/F ratio to match it. I could run 100% duty cycle...but that doesnt mean Im lean. It could mean Im just super dog *** rich.
09-02-2003, 01:32 AM
#29
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Originally Posted by j9fd3s' date='Sep 1 2003, 10:16 PM
[quote name='adamlewis' date='Sep 1 2003, 06:11 PM'] Yeah. Like I said, Ive been running 15psi for a while now and have absolutely no problems. No low compression, no smoke under boost/vacuum, perfect rock steady idle, no shaft play...I mean the car is perfect.
I think the car is tougher than you all think...
And Ive still yet to see any real data about how much air the HT-18 flows...Or how efficiently it does it.
I think the car is tougher than you all think...
And Ive still yet to see any real data about how much air the HT-18 flows...Or how efficiently it does it.
mike [/quote]
Ouch. Thats bad times indeed.
Just for the record, Im not saying Im running 19psi all the time. I just did it one night by accident. And decided to try it out for a little bit. I turned it back down to 13-14.
09-02-2003, 01:35 AM
#30
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Originally Posted by adamlewis' date='Sep 1 2003, 10:08 PM
Please This car has been saved already.
The only thing different about the way you and I work on our cars is that I actually push it to see what it can do instead of just taking someone elses word without any real proof...
The only thing different about the way you and I work on our cars is that I actually push it to see what it can do instead of just taking someone elses word without any real proof...
Oh, and this is my first rx7, first turbo car, first attempt at tuning, MWAHAHAHAAAA.
***! lol....and I hope u caught the sarcasm in my post.