Advanced Turbo Element Discussion
Oct 22, 2003, 04:56 PM
#16
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Originally posted by HobieKopek
Vortech FMU (I don't even know what disc is in it at present, but I believe it's the 12:1 and that could be the reason I'm still going lean if the FP is having trouble keeping up)
Vortech FMU (I don't even know what disc is in it at present, but I believe it's the 12:1 and that could be the reason I'm still going lean if the FP is having trouble keeping up)
Oct 22, 2003, 05:21 PM
#17
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Bigger piping causes more boost ? I am running 2.5 inch piping (turbo back) and im having boost problems. im gonna try to put my stock CAT back on and im trying to get a stock down pipe also. if this doesnt work what do you guys think? i already changed the spring in my wastegate and changed the vacuum line from the wastegate to the turbo.
Oct 22, 2003, 05:37 PM
#18
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i was going to the 2.5" until i heard about your problem, i really didnt think that could happen, before i go and blab my mouth how much of an over boost are you getting? and did you leave the wastegate as it came (around 5 psi)?
Oct 22, 2003, 06:47 PM
#19
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Larger exhaust piping can cause boost spikes. That's not my problem. I bet you could easily solve any overboost problems with something simple like a boost controller anyway. If that doesn't help, it may be something else.
If you read my registry entry it tells you all the piping on my car is custom made.
I think the intent of this thread was to discuss in depth, turbo questions though, not so much our individual setups.
If you read my registry entry it tells you all the piping on my car is custom made.
I think the intent of this thread was to discuss in depth, turbo questions though, not so much our individual setups.
Oct 22, 2003, 07:01 PM
#20
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I am having turbo drawbacks... if i dont get in my car soon i am going to steal an evo or sti! does turbo do this to you guys !?! now if that isnt in depth turbo question i dont know what is 
Oct 22, 2003, 07:13 PM
#23
Originally posted by sdhotwn
A T3/4 are different in peak thermals and are capable of 25psi. Althought they are rated at only 348cfm without little tricks. They are capable of 500hp applications and tend to spool earlier than the Big T-28 if tricked out.
A T3/4 are different in peak thermals and are capable of 25psi. Althought they are rated at only 348cfm without little tricks. They are capable of 500hp applications and tend to spool earlier than the Big T-28 if tricked out.
hmm
/boggle
Oct 22, 2003, 07:16 PM
#24
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it says it starts spooling earlier, that doesnt mean it spools faster, talk to andrew, he's the only one i know using the t3 right now, he would know about it, look at the charts he provided too, very helpful
Oct 23, 2003, 08:33 AM
#25
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Theoretically they should start spooling at pretty much identical points on given the same circumstances (maybe every so slightly faster on teh T25 due to a miniscule overall reduction in rotating mass), but with the T28 you might see boost faster due to the larger compressor wheel. Truth be told I've never seen or looked for a chart for the T28 or T25. If anyone is interested enough to find them then we could easily do a side by side comparison.
Oh, and airlinevomitbag has a T3 setup, but I don't know if he's running presently. That and t3/t4's setup is a hybrid t3 so I guess you could half count him too.
Oh, and airlinevomitbag has a T3 setup, but I don't know if he's running presently. That and t3/t4's setup is a hybrid t3 so I guess you could half count him too.
Oct 23, 2003, 09:45 AM
#26
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http://www.limitengineering.com/catalog.pdf
doesn't have the GT28 on there, but you might be able to compare with something that has similiar trim level and a/r housing
info for the gt28
TURBINE SPECS: T25 .64 A/R Turbine Housing 62 Trim Turbine COMPRESSOR SPECS: T3 .60 A/R Housing 60 Trim Wheel Compressor Flow: 31 LB/MIN
not sure how to compare, but it maybe useful to someone smarter
doesn't have the GT28 on there, but you might be able to compare with something that has similiar trim level and a/r housing
info for the gt28
TURBINE SPECS: T25 .64 A/R Turbine Housing 62 Trim Turbine COMPRESSOR SPECS: T3 .60 A/R Housing 60 Trim Wheel Compressor Flow: 31 LB/MIN
not sure how to compare, but it maybe useful to someone smarter
Oct 23, 2003, 12:07 PM
#27
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Got a T-25 boosting RRM kit
Originally posted by sdhotwn
From my understanding T25 is the next step down from the T28. I do not know what it's capabilities are and if it would fit the proper application as far as peak efficiency and cfm.
It isn't always about what the max psi that will be used is. Often a turbo is chosen solely on trying to match your standard running/racing boost level with the peak efficiency of the turbo compressor.
From my understanding T25 is the next step down from the T28. I do not know what it's capabilities are and if it would fit the proper application as far as peak efficiency and cfm.
It isn't always about what the max psi that will be used is. Often a turbo is chosen solely on trying to match your standard running/racing boost level with the peak efficiency of the turbo compressor.
It would be a waste with the Lancer, in my opinion.
A standard engine would explode and melt.
The car itself would disintegrate.
Oct 23, 2003, 01:02 PM
#28
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i have the rrm kit and a wide band o2 with airfuel read out
and mine goes lean at 5 psi also, i have an upgraded fuel pump, aem ajustable fuel pressure regulator and vortech 12:1 fmu and apexi afc. i pulled off my fmu today and it runs about the same, it runs the same no matter how much fuel correction i put on my afc, i can put my fuel pressure to 60 psi with the aem unit and it doesnt help. i was going to switch injectors also but with hobie having 440 injectors and he is still having the exact same problem then i might wait. also my apexi avc shows injector duty cycle and it never comes close to 100% so the injectors arnt going full blast all the time anyway, could it be a m.a.s. problem? who knows
and mine goes lean at 5 psi also, i have an upgraded fuel pump, aem ajustable fuel pressure regulator and vortech 12:1 fmu and apexi afc. i pulled off my fmu today and it runs about the same, it runs the same no matter how much fuel correction i put on my afc, i can put my fuel pressure to 60 psi with the aem unit and it doesnt help. i was going to switch injectors also but with hobie having 440 injectors and he is still having the exact same problem then i might wait. also my apexi avc shows injector duty cycle and it never comes close to 100% so the injectors arnt going full blast all the time anyway, could it be a m.a.s. problem? who knows
Oct 23, 2003, 01:15 PM
#30
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yea i have a fuel pressure gauge and i am running the fjo wideband 02 www.fjoracing.com i posted pics of where its mounted and that stuff the other day in show and shine hows it working with out a mas? how does it know how much air is comin in?
Last edited by gokusupersaiyen; Oct 23, 2003 at 01:22 PM.