89 turbo supra 5 speed dies in mid shift????

[jtown125]

First off...I sure as hell aint made out of money and I agree that a 300 dollar tuner would be pretty nice.

The kit that I ordered is an hks kit, but the offbrand bov i bought is exactly the same so i will try em both out and see what works better.
The bov isn't that hard to take apart to put the 1" hose clip on.

Im not going to put a bpv on cause i think that will just be in the way...its already tight as it is...

OH, btw I had probably another stupid question im sure that you could answer...

the vacuum places where the OEM bov circulates....if i was to put a vacuum line there...could that possibly help? Just curious since i have a week to mess around with it.

And one more question...Does it hurt that my exhaust has the wastegate runner and its cut off?

and thanks for admitting your dickishness...
ill admit my stubborn bastardness...lol

[cre]

Originally Posted by jtown125

Im not going to put a bpv on cause i think that will just be in the way...its already tight as it is...

I've seen a very high power MKIV with 3 PBV's. When you've got a lot of air to dump, sometimes one just isn't enough.

Originally Posted by jtown125

OH, btw I had probably another stupid question im sure that you could answer...

the vacuum places where the OEM bov circulates....if i was to put a vacuum line there...could that possibly help? Just curious since i have a week to mess around with it.

I don't quite follow.... The You are, I assume, referring to the intake's inlet for the BPV's exhaust or discharge? If so, with a BOV you just want it plugged. When you install the BPV kit the discharge will go there like it was in the stock setup. The vacuum system goes positive when you start boosting, running a hose there will just cause a big boost leak.

Originally Posted by jtown125

and thanks for admitting your dickishness...
ill admit my stubborn bastardness...lol

Comes with the territory. Some people bring it out in e more than others. No, I'm not referring to you; Someone else has been ticking me off.

[jtown125]

I didn't know what that outlet did...
both outlets are plugged for original bov.
i was just curious...

does it hurt that my exhaust has a wastegate runner that is cut off?

and what fuel controller would you recommend?

[cre]

A BPV/BOV has an inlet and an outlet. The inlet is on the boosted side of the intake, between the turbo and the throttle body. The Outlet side is on the ambient/vacuum side of the intake, before the turbo (and after the air flow meter in certain setups like this one). The poppet/valve is held closed by a spring and depending on the type the spring is assisted by the boost pressure. When you let off the throttle the intake plenum (the portion AFTER the throttle body) pressure goes negative and the manifold reference (the small vacuum line) goes negative sucking the poppet/valve open against the pressure of the spring. The strength of the spring dictates how much vacuum is required to open and keep the valve open. Excess pressure between the turbo and the throttle body is now discharged back to the intake before the turbo. This prevents new air from entering the system and the ECU doesn't add any more extra fuel... you don't run lean though because the ECU has already measured and allocated fuel for the air which has just had its trip extended. If you just dump the air out, the ECU still thinks it's in the system and it still send fuel for it.

[jtown125]

I follow...
reading always helps...

the hks vpc...is this a good tuner?
and how hard are they usually to install...

maybe i will spend my tax money on one...
taken i get the bov thing fixed when the parts get here...

[jtown125]

Im going to take very detailed pics tomorrow of my setup.
I wasn't the person who put the new motor in, so I don't know everything that was changed and what not. I know that the motor was BUILT.

Im looking at the neo it doesn't seem extremely hard to wire and it has alot of good components to it...

I know that this car has alot of potential once I get all the minor kinks worked out.

http://cgi.ebay.com/ebaymotors/86-91...Q5fAccessories

This is the downpipe i have, the second pipe running down is cut off halfway.

[cre]

The VPC is a decent piece of hardware.... but it is OLD. By today's standards it's the MAFT Pro's handicapped brother who even gets beat up in the back of the short bus. It's great that it allows the removal of the KVAFM in favor of a speed/density setup, but the "one size fits all" pre-tuned ROM and very basic tweaking controls leave a LOT to be desired by today's standards. Honestly, at this point I'd step up to a MAFT Gen II or a MAFT Pro.... or go full standalone... but they're hell to learn in most cases.

Basic fuel controller are very easy to wire up, tuning takes practice and unless you're also installing a wideband you just have a shop do it for you.

You don't want to run that downpipe on the stock turbo unless you've welded in a dividing plate to separate the air spaces. Aftermarket turbos often have the housing cast so that the wastegate and the exducer's air flow is completely divided... not the case on the stock CT-26. Not doing so makes thins louder than they should be as the primary outlet is leaking out there too and it creates even more pressure that the wastegate actuator has to push against in order to open the gate. =

It does not matter that the outlet of the divorced wastegate pipe is open at the end. With a well flowing exhaust thet's just another matter of noise versus stealth... no performance gain, but no loss this time.

EDIT: There's also the MAP ECU. It's a unit comparable to the MAFT Pro... well the second generation of the MAP ECU is. Like the MAFT Pro, it lets you change over to a different type of air metering system (the MAFT Gen II does also but it lacks support for S/D and doesn't have a built in boost control function) and allows you to tune your fueling... I don't know if it offers wideband O2 integration, boost control or timing control. I have't used it, but in some circles it is VERY popular.

[cre]

Originally Posted by jtown125

does it hurt that my exhaust has a wastegate runner that is cut off?

Again, I have no idea what you mean.... doesn't sound good though. If you want to control the wastegate then build a ball valve controller for $30. Don't cut anything, don't add any washers and don't weld anything...

Originally Posted by jtown125

and what fuel controller would you recommend?

It depends on your final goals, how much you're willing to budget for and if you are willing to wait until you can get something really beefy or if you just want something for now. The Apex'i SAFC-II is an older unit but very reliable and very popular; Its successor is the Neo, an equally popular unit and even more flexible and user friendly. Beyond that you're looking at a MAFT Pro setup or a full stand alone EMS.