Topic: How to get the EBAY T3/T4 turbo to spool faster? (Read 25857 times)

turbob16hatch · « **Reply #30 on:** August 24, 2009, 04:37:26 AM »

Well then thats your problem. for the most part.

reddevil · « **Reply #31 on:** August 24, 2009, 09:09:50 PM »

Pre-turbo is just an air filter basically on a 5" section of adaptor piping that is straight in.

turbob16hatch · « **Reply #32 on:** August 24, 2009, 11:23:38 PM »

i'm talking about the exhaust/manifold side.

reddevil · « **Reply #33 on:** August 25, 2009, 02:15:02 AM »

Pretty damn perfect.

I admit my welds are "FUCKING UGLY AS SHIT", but I always grind down the inside. And the main exhaust mani is a production unit, with my custom uppipe which is LEAKPROOF and as straight up as possible.

turbob16hatch · « **Reply #34 on:** August 25, 2009, 02:43:35 AM »

what size is the upipe? in this case i'm guessing it's something like 1.75-2" tube?

malichite · « **Reply #35 on:** August 25, 2009, 10:33:14 AM »

robus · « **Reply #36 on:** August 25, 2009, 11:14:39 AM »

nicely balanced

88dx · « **Reply #37 on:** August 25, 2009, 05:40:18 PM »

Swap a Dirty D in their ASAP

caged · « **Reply #38 on:** August 26, 2009, 06:44:12 AM »

Build a front entry inlet manifold and loose a few feet of intercooler pipe, you have no A/C anyway.

reddevil · « **Reply #39 on:** August 27, 2009, 11:27:25 PM »

Eh,,, Something has to be wrong.

1st gear hits 6psi, 4th hits 20.....

patsmx5 · « **Reply #40 on:** August 27, 2009, 11:31:01 PM »

Quote from: c0mpl3x on August 25, 2009, 02:48:21 AM

your timing/fuel will help spool too, if you haven't overlooked it.

This too. I tune for 11.5:1 in full boost, but I run 13:1 at 100kPa tapering to 12:1 by 150kPa, 11.5:1 by 190kPa. I used to have it tuned to straight 11.5:1 as soon as it went into boost, and spool was TERRIBLE. It felt like it just bogged when I floored it. Now it climbs into low boost like it's nothing. Just as smooth as can be, no hesitation.

reddevil · « **Reply #41 on:** August 28, 2009, 12:35:57 AM »

Went out for a rive thinking to buy a new MAF connnecion..... ie a FERNCO plumbing coupler. I have split them before, but on he drive down 205 and back, no issues,still slowish spool, but it still honked along...

I DID NOTICE the timing I pulled up top though! 3rd gear pulled lickity split from 65-75, then buh.... (well, slower).

The only good out of all this? Havent popped this motor yet.

88dx · « **Reply #42 on:** August 28, 2009, 12:48:49 AM »

Do you happen to have a Drivers side tail light for a 1990 subaru Legacy?

reddevil · « **Reply #43 on:** August 28, 2009, 12:53:40 AM »

Quote from: 88dx on August 28, 2009, 12:48:49 AM

Do you happen to have a Drivers side tail light for a 1990 subaru Legacy?

Sedan ior wagon, I think they are diff....

88dx · « **Reply #44 on:** August 28, 2009, 12:57:05 AM »

wagon

reddevil · « **Reply #45 on:** August 28, 2009, 01:00:29 AM »

think so. will look.

turbob16hatch · « **Reply #46 on:** August 28, 2009, 01:20:20 AM »

Quote from: reddevil on August 27, 2009, 11:27:25 PM

Eh,,, Something has to be wrong.

1st gear hits 6psi, 4th hits 20.....

So what wastegate/boost controller setup do you have. if your wastegateis opening to soon, it could be causing slow spool.

reddevil · « **Reply #47 on:** August 30, 2009, 08:49:38 PM »

This is the boost controllerI have, the Greddy Trust

[/img]http://www.capa.com.au/pics/turbo_wastegates_trust_tvvc.jpg[/img]

I also have STUFFED the BOV so the spring is TIGHT and that actually does seem to help IMMEDIATE boost, but just the jump to boost from vacumn.

caged · « **Reply #48 on:** September 06, 2009, 04:31:47 AM »

Just putting a few more ideas out there, Is it a standard up pipe or has a flex joint? check for a leaking up pipe. Also try another air flow meter, they are fragile as. Iv never seen anyone use them as a blow through either?? I just remembered I had similar spool problems on my 95 WRX which turned out to be an afm.

reddevil · « **Reply #49 on:** September 07, 2009, 09:10:51 PM »

Standard uppipe, "doesnt" have any leaks, MAF does leak, but veddy veddy small, have bigger leak in the throttle body..... THAT I need to change out, just havent yet.

reddevil · « **Reply #50 on:** September 09, 2009, 11:17:49 AM »

Did another boost leak test...

Found a new leak (old intake manifold gasket finally blew out in the weak sauce spot I was concerned about and the MAF finally gave up. Fixed the maf leak, but need to buy a new gasket. The throttle body is still leaking at the butterfly shaft area, so need to swap that out as well.....

patsmx5 · « **Reply #51 on:** September 09, 2009, 12:29:58 PM »

Damn that sucks, sounds like everything leaks. What's your intake manifold gasket made of? My mazda every gasket on the motor seems to be MLS. Intake, exhaust, head, WP, throttle body, etc.

reddevil · « **Reply #52 on:** September 11, 2009, 12:39:37 AM »

Some success!

swapped throttle bodies, replace split manifold gasket, and now the atmosperic BOV is recirculating! Spool is "quicker", nothing awesome, but better. But the big news is that when shifting when getting on it, instead of 20psi-0-1-2-3-4 back to 20, it goes 20-0-10-11-12-back to 20! Big effing diff! Now I think it running extra rich again due to fixing all my leaks.

Must
Get
Tuned

reddevil · « **Reply #53 on:** September 13, 2009, 12:29:44 AM »

And found more leaks....

My fixed MAF didnt "fix", so I redid the seal with epoxy. If that fails, GDIAF!

And found another leak that was effing silent, had to find it by feel. Two weld holes in the piping under the wagon going into the FMIC. Beaded that fucker up.

Better?

I hope so!

reddevil · « **Reply #54 on:** September 15, 2009, 06:32:38 PM »

Success?

Well, welded up two pinhole leaks in the IC piping, epoxied the hell out of the MAF, tightened on t-bolt clamp and added some timing in......

The turbo doesnt spool much faster per rpm.....But..... the rpms get there quicker! ie. it is a hell of a lot more responsive now!

Much more fun to drive, even if I have to keep it above 3000rpm....

97Econobox · « **Reply #55 on:** September 23, 2009, 04:49:49 PM »

I still vote the answer lies in a 50 shot.

silver · « **Reply #56 on:** September 23, 2009, 07:24:53 PM »

Quote from: 97Econobox on September 23, 2009, 04:49:49 PM

I still vote the answer lies in a 50 shot.

+1

crxvtec91 · « **Reply #57 on:** September 24, 2009, 05:31:57 PM »

Quote from: 97Econobox on September 23, 2009, 04:49:49 PM

I still vote the answer lies in a 50 shot.

Real man push 100+shots

patsmx5 · « **Reply #58 on:** September 24, 2009, 05:50:52 PM »

Quote from: crxvtec91 on September 24, 2009, 05:31:57 PM

Quote from: 97Econobox on September 23, 2009, 04:49:49 PM
I still vote the answer lies in a 50 shot.

Real man push 100+shots

reddevil · « **Reply #59 on:** September 25, 2009, 12:10:10 AM »

Dyno tune tommorrow (friday) @ 11:30 am, as long as the dyno owner doesnt flake out (50/50 chance)

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Author Topic: How to get the EBAY T3/T4 turbo to spool faster? (Read 25857 times)