CT20b boost Q Options

[Azncelica]

I've got my 3rd gen 3sgte swap done this past year. What I've notices, Turbo don't go full boost until about 3700 rpm. Pulls hard up to redline. I had a buddy with another ct20b turbo. I'd installed on my car. Test drive, It kicks in about 2500 rpm, but notices lack of power past 5k. I'm starting to wonder if my turbo was already mod. or normal.
I also dyno my car. 3 base pulled at 14ps, cheap ebay boost control wasn't holding anymore. I dyno in at about 230hp, miss place actual dyno sheet. For sure it was 230hp or more. Just also wondering where everyone else dyno their car? Only thing that is upgraded is, Went front mount intercooler, Aftermarket down pipe, cat deleted. Full 3' exhaust. and aftermarket radatior. Every else is all stock. Last Also Took my car to the track for the first time. My best time was 14.4 at 99 mph, fastest trap speed was at 103 mph but slower time. No traction, tires spins 1-3rd, finally have traction after 60ft mark. Planing on going with bigger turbo set up this year. Just want to a feel of what everyone have done and try so I can related that to my choices of set up I would like to do. I want my $$$$$$$ count on what ever I do. As we all know, everything for 3sgte and celica isn't cheap.

[presure2]

3700rpm is really late for a ct20b to spool, even with a front mount intercooler.

i have full boost before 3000rpm, anything later than 3200 or so, i would start looking for issues.

time sounds about right for conditions you discribe, practice will bring down the 60ft times, and will improve overall times alot.
there are lots of 3rd gen 3sgte dyno charts in the sticky at the top of the FI forum here.

[easternpiro1]

3700rpm is really late for a ct20b to spool, even with a front mount intercooler.

i have full boost before 3000rpm, anything later than 3200 or so, i would start looking for issues.

time sounds about right for conditions you discribe, practice will bring down the 60ft times, and will improve overall times alot.
there are lots of 3rd gen 3sgte dyno charts in the sticky at the top of the FI forum here.

x2

i ran a 14.2 my fastest time, at my first time going to the track. all i did was spin spin spin 1st-3rd

[DEATH]

3700rpm is really late for a ct20b to spool, even with a front mount intercooler.
i have full boost before 3000rpm, anything later than 3200 or so, i would start looking for issues.
time sounds about right for conditions you discribe, practice will bring down the 60ft times, and will improve overall times alot.
there are lots of 3rd gen 3sgte dyno charts in the sticky at the top of the FI forum here.

x2
i ran a 14.2 my fastest time, at my first time going to the track. all i did was spin spin spin 1st-3rd

P - that entirely depends on the driver and how used to the powerband he is. I've seen people take that long to hit FULL boost with a 3S-GTE that have stock intake, DP and exhaust also. I'm not trying to argue with you here at all - just sort of depends on the car, it's mods and the driver.
The issue he may need to look at here is experience - who knows. It takes some getting used to this power of ours

death volume and pressure loss

This post has been edited by DEATH: Jan 12, 2011 - 4:50 PM

[Azncelica]

3700rpm is really late for a ct20b to spool, even with a front mount intercooler.
i have full boost before 3000rpm, anything later than 3200 or so, i would start looking for issues.
time sounds about right for conditions you discribe, practice will bring down the 60ft times, and will improve overall times alot.
there are lots of 3rd gen 3sgte dyno charts in the sticky at the top of the FI forum here.

x2
i ran a 14.2 my fastest time, at my first time going to the track. all i did was spin spin spin 1st-3rd

P - that entirely depends on the driver and how used to the powerband he is. I've seen people take that long to hit FULL boost with a 3S-GTE that have stock intake, DP and exhaust also. I'm not trying to argue with you here at all - just sort of depends on the car, it's mods and the driver.
The issue he may need to look at here is experience - who knows. It takes some getting used to this power of ours

death volume and pressure loss

Even it's takes me up to 3700 to get full boost. I did not notices any really delay on acceleration. I forgot to note that I do have a lighter flywheel(F1) and Act clutch. I've notices when I installed my buddy ct20b turbo. I spool quicker like I mention, buy I did notices slight delay thur my rpm band. I noted I had a cheap ebay boost control, now been replaced with a Halman one. I have my engine running at 18 psi, no boost cut. Big differences from 14 to 18 psi. I ran against buddys that own evo, sti, I've notices I have a better top end power stock to stock. I driven evo and sti. notices lack of power past 5k seems to drop off. no more punch to it. I can keep my car in high rpm, etc 3rd gear and just punch it and still jump. Thanks for all the feed back. I'm looking for more power, but still keep is streetable. Also have any of you guys try this turbo. My buddy have ct26 turbo sent out. rebuild to a 57trim comp and 47 or somethingon hot side with a angle trim on exhaust wheel. I was thinking about trying it on and dyno it just to see what number it can put out. He have an Mr2 with 2gen 3sgte usdm. I driven his car, lots of torque, but spools pretty slow, even at 8lbs of boost. motor all stocks.