There is no point in going past 26lbs. Mine only goes to 26lbs. The 16g and 20g are way out of their efficiency range above 26lbs. Get a bigger turbo before you try and run 26+lbs.
that is true, actually its 27 (i done the math) but our stock turbo is out of its range @ 18lbs. I know you ran more than that. to think the average stock turbo runs 21-22lbs. I run 28-29lbs on the 20g and its way faster than 25-26. You may not make that much more whp but I promise you the tq will be a great amount, and thats perfect for a short revved car like ours.
how are you guys basing the "out of efficiency"??
the stock turbo on a srt4 is in it's best efficiency range between 15 and 17.5 psi...at 20psi, the stock turbo is at 65% efficiency fyi..
i haven't studied the s20g map as much as i did the stocker cuz i havent really started to "up the boost" on her yet...
do you know how to read a compressor map? (not talking shit, just want to see if your statements have any validity)
have you studied the compressor map?
have you studied the super 20g (w/10cm housing) compressor map? (can you find one for this? if so, post it up)
the 2.0 420a motor guys had difficulties getting the 20g to spool 28-30 psi....
and found no more power between at that high of boost... (with a 7200rpm rev limit)
cheers for the good discussion...
p.s. anyone want to copy the "CD" that came w/the portfueler..and send it to me?? i got screwed and didnt get one (and hahn wants $50+ for it, after i've spent ~3k w/them, F 'em)... (i have a 9=pin serial cable and have opened up my "brain" to see that the female port is chillen...)
here is a compressor map for the 20g and the gray dot is showing @ 27lbs were would it be at that amount of boost:
CFM = L x RPM x VE x Page Ranking/5660
Where L = engine capacity in liters
RPM = maximum engine speed (we'll adjust this later)
VE = engine volumetric efficiency. From A. Graham Bell's book Forced Induction Performance Tuning some good values for VE are:
Stock 2-valve = 85%
Stock 4-valve = 90%
Street modified = 93%
Competition = 105%
Page Ranking = pressure ratio
To calculate the pressure ratio you need to know what boost pressure you want to run and then plug that into the following formula:
Page Ranking = 14.7 + Boost/14.7
if the graph was in m 3/s its: m 3/s = CFM * .0004719
if the graph was in lbs you would do this: lbs=CFM/14.27
p.s. anyone want to copy the "CD" that came w/the portfueler..and send it to me?? i got screwed and didnt get one (and hahn wants $50+ for it, after i've spent ~3k w/them, F 'em)... (i have a 9=pin serial cable and have opened up my "brain" to see that the female port is chillen...)
LOL....we all had to spend that extra 50 bones to get that stupid CD...I have absolutely no idea how to copy it aside from burning it to a disc...and I dont even know if I can do that on this old ass laptop. I'd be willing to sell you mine for 20 bucks if you'd like, IF I cant burn you one that is...
this weekend i put on my 20g kit and also installed a fuel pump and stage 2 injectors. we ran outta time and didnt get a chance to put the fuel controller on yet, so its running pig rich right now. but so far i really like the kit. my question is... without a boost controller, whats the max boost u guys can get? I noticed i couldnt get it past 10lbs. but with my boost controller i got it up, but nothin crazy yet. gotta get the neo in and then crank er up. so any info would be cool. thanks
how are you guys basing the "out of efficiency"??
the stock turbo on a srt4 is in it's best efficiency range between 15 and 17.5 psi...at 20psi, the stock turbo is at 65% efficiency fyi..
i haven't studied the s20g map as much as i did the stocker cuz i havent really started to "up the boost" on her yet...
do you know how to read a compressor map? (not talking shit, just want to see if your statements have any validity)
have you studied the compressor map?
have you studied the super 20g (w/10cm housing) compressor map? (can you find one for this? if so, post it up)
the 2.0 420a motor guys had difficulties getting the 20g to spool 28-30 psi....
and found no more power between at that high of boost... (with a 7200rpm rev limit)
cheers for the good discussion...
p.s. anyone want to copy the "CD" that came w/the portfueler..and send it to me?? i got screwed and didnt get one (and hahn wants $50+ for it, after i've spent ~3k w/them, F 'em)... (i have a 9=pin serial cable and have opened up my "brain" to see that the female port is chillen...)
You have a compressor map for the stock turbo?? I have been looking for one, but havent been able to find it. Can you post it up?
__________________
2005 Black ACR
----The Old----
Stock Turbo + fuel/tuning + boltons.
13.37 @ 110 (2.2 60' on stock KDW's)
the 2.0 420a motor guys had difficulties getting the 20g to spool 28-30 psi....
and found no more power between at that high of boost... (with a 7200rpm rev limit)
cheers for the good discussion...
What killed the power @ that amount of boost is cuz they rev so high, rpms will put you out of range real quick. me and buddy are have a tough time finding the right turbo for is 1.6 but it revs to 7700.
the map is from the greddy TD06 20g, I guess we will probably have to get with hahn or mitsub see if they have one with that exhaust housing.
do you NEED a SAFC with portfueler?? i have a mapclamp that is tunned per HAHN's specs, isnt that enough??
-chango
w/a portfueler, you DO NOT use any other fuel alterning devices... however, an SAFC can be used to clamp your MAP... just dont F w/the fuel trims....
agreed...........
on your recent post you said its "safe" to run 15-16lbs on stage 1 injectors?? so you are saying that you cant run higher than that even with the portfueler??
chango- with the portfueler, the stock injectors are "clamped" at a certain psi (stop spraying more fuel, just a constant amount) and the 2ndary injectors (portfueler inj.) start spraying at 15psi...
hahn calls for the map to be clamped at 3.96 volts.. which is equivalent to ~12.9psi of boost (if i remember correctly).... the portfueler reads vacuum/boost and rpm.... once it sees 15.0psi and above, the injectors start sptting fuel based on the psi and rpm....
to think the average stock turbo runs 21-22lbs. I run 28-29lbs on the 20g and its way faster than 25-26. You may not make that much more whp but I promise you the tq will be a great amount, and thats perfect for a short revved car like ours.
20G + Portfueler=
Linear Mode
