big daily drien turbos input

[ITSME4G63]

Alright, I've got a question for you guys who are running a 20g or bigger turbo on your daily driver. How long have you been running it and what kind of inconvenineces have you come about? Has it left you stranded because you blew up your motor or theres no problem driving you car with a more than average sized turbo. Thanks for input. Looking at long results here. dependency sort to speak.

 

[1fast97gsx]

gas mileage is better ... big turbos aren't as much fun on the street but well worth it at the track.

 

[ITSME4G63]

godamit, i just posted it a minute ago and theres already an answer!1 thank more imput please.

 

[1993eclipseGS]

When I had my t04b on my car, It woulden't throw you in the seat until 4,000rpms.. That means, Until 4,000rpms hit.. Whatever was messing around with me, Or me trying to get going.. Was winning and I was like a slow n/a car. then 4k rpms come, Then I hadto take it to redline. My car was not tuned good so I know that had a big part to do with the late 'spoolage'

 

[Knuckles2.0]

i'm running a rs49, it makes good power at 3800rpm, i think the best street turbo is prolly the evo16g or maybe a small frank. but i would never get rid of the big turbo...

 

[DSMJim]

I don't get full boost until 4000rpm and honestly I woulnd't want it any earlier. I have a 50trim and thats just fine. Boost any earlier and im making way too much power for daily driving around town. Anybody that wants to try me gets a quick downshift to whatever gear and im well over 4k and making the power. Honestly I wouldn't want full boost before that anyway. I start to make boost at 2500 and it goes uptowards 22psi by 4000, anything earlier then that is pretty retarded IMO.

 

[4SFED4]

I find it easier not to abuse the car when using a larger/slower spooling turbo on a daily driver. The biggest differance is noticed on take off, highway the power is only a downshift away. If you are a serious driver and don't jump on every ricer that rolls up on you, the slower spool shouldn't really bother you.

 

[Sean485]

20g daily driven here. Only complaint really is when i'm using the cruise it tends to "surge" a bit. Speed drops below set, cruise opens throttle, takes longer than the cruise "thinks" it should take to start speeding up again so it opens the throttle more, turbo hits ~5psi, now the car accelerates faster than the cruise anticipated and it overshoots set speed, cruise closes throttle almost completly, repeat.

Otherwise I love it, the turbo isn't "huge" so it still spools quickly, I can get good gas mileage if I dont use the loud pedal alot on the highway, and the power is always nice to have when you need pass someone, especially around here where there are alot of 2 lane roads and very few good places to pass anyone at.

 

[ACKERSON]

I have a pte 60 trim, I get full boost (22 psi) at 4200 rpms. The late spool isn't bad at all, it's well worth the wait.

 

[kambonate]

honestly, i think my 50 trim is the greatest thing i put on my dsm.. sure its a bit laggy but it saves a lot on fuel mileage because i am not on it like i was on my 16g.. the longer spool up time keeps me from getting in trouble.. plus the bigger turbo like the 50 trim pulls so damn hard top end wise, compared to the smaller turbos. but make sure you have the supporting mods. fuel, logger, injectors ect... ect... i really havent felt the true power yet i am only running 14 lbs of boost.. with my maf-t 190 lph denso and 550's... waiting on $$$$ but i guess thats my 2 cents.. have fun
~nate

 

[Da Dymer]

I second that...i run a gt35r with a 1.06 a.r on my daily driver......actually im fine with the turbo for everyday use, but the fuel pump is what gets me...its so freakin loud, even with the voltage stepper...sure its laggy til about 4000rpm, but its the fact that it gives me good gas mileage...around town i get close to 22mpg....which i dont think is bad at all

 

[GSX4LIFE]

I have a GT40 56trim/T350 in a .63a/r 5bolt housing. I agree with DSMjim. Full boost in the low 4000rpm range which I think is perfect for streetability. I wouldnt mind a little better boost recovery between shifts though. But that should be ironed out in the next couple months.

 

[1SloColt]

I have a GT40 56trim/T350 in a .63a/r 5bolt housing. I agree with DSMjim. Full boost in the low 4000rpm range which I think is perfect for streetability. I wouldnt mind a little better boost recovery between shifts though. But that should be ironed out in the next couple months.

I see you are basically running a SC61 with a stage V turbine wheel but in an AGP turbo? How much air are you flowing at what PSI? If you are falling out of boost between shifts you should rev higher before shifting.

 

[95gstnj]

50 trim daily driven here. there is a huge noticable difference, but its perfectly fine. plus, the highway is more fun

 

[gamingguru]

I got a PTE SCM430 or some shit like that. I spools up by like 3500-4000 and the lag really isn't all that noticable.

 

[91gvr4]

20g here, i love it more then the 16g/14b i had before. I love it cuz if someone comes up next to me from a roll i can downshift and have instant boost. But when just driving i dont see 10psi in every gear!

 

[krisj144]

with my 3055, I can honestly say there's only been one day when I wished I had earlier spool. And that way over a year ago at an autox event, the moment was fleeting. Most of the time I'm well-content to be able to have more overhead before I get the car to really open up.

These guys are right, big turbo's give the advantage of probably more streetability because you're not in the boost unless you mean to be. My evo can be a little surprising sometimes because of just how peppy the smaller turbo is even in moderate traffic.

 

[sweet97]

I had a 50 trim and found part throttle response to be just fine. I am going with one of AGPturbo's RS60T's this year. 60 lbs/min compared to my 50 trims 49lbs/mi.
I read the 60-1 cmpressor wheel flows a lot of air at low boost so I am not worried about the lack of boost at low rpm's, probably the same as the 50 trim. Mark

 

[nanokpsi]

I daily drive an scm50 car, but a replacement has been ordered. The only people that complain about lag have an incomplete set up, or have never had a big turbo. Full boost around 4k. Hopefully my scm61 gets here soon.

 

[GPTourer]

20g daily driven here. Only complaint really is when i'm using the cruise it tends to "surge" a bit. Speed drops below set, cruise opens throttle, takes longer than the cruise "thinks" it should take to start speeding up again so it opens the throttle more, turbo hits ~5psi, now the car accelerates faster than the cruise anticipated and it overshoots set speed, cruise closes throttle almost completly, repeat.

That's a problem with my EvoIII as well, even more so to the point where the cruise is useless because it is so annoying jerking and surging all the way down the highway. IMO it's the reason Evos don't come with cruise.

 

[pimpinboudy]

Daily Driven 60 Trim Turbo. Love it and makes awsome power. spool is similar if not identical to the 50 trim from PTE. just beat a Z06 on the way home from work. it was awsome.

 

[DSM Ghost]

I got a DD 2g with a SBR 60-1 and its great it has power when ever I need it and I drive it in the snow, so when the boost starts to come on by that time its time to shift gears so I see no problems with running big turbos year round even in the Mid West

 

[AL92]

I drive this car most of the year and the bit of lag is a good thing in winter conditions.
Also the lag is not that bad and you can downshift and be into power quickly.It could be a bit slow off the line but a two step helps that out.
I plan on a stroker to help lower spool even more and maybe a 50 shot of spray.
I have an RS49 50 trim now and might go up but likely to a ball bearing type.I am in no rush.I want to see what this 50 trim is capable of when I install my cams and maybe get a sheet metal intake.If it can hit 10s on race or spray than good enough for me .If it can't then might go up to bigger one.
Its still very good for daily driving maybe thats why they call the 50 trims the pump gas kings.I haven't taken it beyond 14psi yet either.I am waiting to install my water/alco injection and newly ordered big front mount.Hoping to run 20 to maybe 23 on the street with 94 octane.I think its doable.

Sometimes I think an evo 16 would have been ideal and a bit snappier in traffic and overall.But on the highway the 50 trim is pretty great and off the line with stutterbox its fine too so really not unhappy with it all right now.

 

[Jon Lane]

That's a problem with my EvoIII as well, even more so to the point where the cruise is useless because it is so annoying jerking and surging all the way down the highway. IMO it's the reason Evos don't come with cruise.

Even a T25 with basic mods does this to some degree. There must be a way to crank down the threshold somewhere...

 

[GSX4LIFE]

I see you are basically running a SC61 with a stage V turbine wheel but in an AGP turbo? How much air are you flowing at what PSI? If you are falling out of boost between shifts you should rev higher before shifting.

To answere your question, alot. I dont really know how much air. Never logged airflow. I trap over 120mph at 3000' elevation, in a 3500pound vehicle, with a bad trans. So you figure out how much power Im making.

And thanks for the driving lesson.