I found a good cheap boost controller for $22!!!

[Cubes]

Realistically 12:1 is fine.

Just don't go lean and run less ignition timing to make more power at the expense of reliability.

If it were my car and I was heading down Mallala I would want afr's around the mid to high 11's, no higher.

We did kind of get of track a little, my origional post stated that bad tuning i.e lean afr's and retarded ignition timing is what causes problems. Then some how we got in to the whole advanced ignition timing = more heat or what ever.

Basically you want the heat in the combustion chamber (where it can be used), you don't want it spilling out in to the exhaust, so to speak.

But as I said above, you really don't know what is the most reliable until you tune it in conjunction with an egt guage.

[WhatBrake]

So what is it then?

You would rather what? Tune lean run less ignition timing?

or tune a little richer and run more ignition timing?

I am talking about a whole package, not just playing with ignition timing or just with fuel.

Consider most hipo motors, how they are tuned.

They don't lean the suckers out and run stuff all ignition timing, they tend to run them richer and keep the ignition timing in there, especially around peak torque.

Obviously if you dial in too much fuel you will see egt temps climb due to what is known as afterburn. Its a balancing act, if you really hammer the car around the local track I would definitely consider investing in an egt temp guage. Its the only way to achieve the safest tune.

I should also mention the japs tend to tune a little richer and run a little more ignition timing in their drift cars.

I've done quite a bit of research in to the theory of tuning and feel I have quite a good idea what is going on.

A richer tune that allows a little more ignition timing is a safer tune.

EDIT: ESPECIALLY for ceramic turbine turbo's.

<{POST_SNAPBACK}>

Correct, theres no point leaning out your afr and getting pinging and possible detonation under high work loads. As you said much safer to run it a little rich and tinker with the timing.

Also on the topic of these boost controllers, i have read quite a few pages and really dont have time to read 25 so if someone can vouch they work well on an R32 GTS-t/GTS4 i'l just get one. Thanks in advance

[ronald_r32]

well i am still waiting for mine and he is not replying to emails

[Andi]

Try a different email account mate, he's replied to alot of other people very recently. He just may not be getting yours. Mark is a top bloke!

[ronald_r32]

What other account can i email?

[pavel]

got mine today, took about a week all up, yet to fit it. thanx

[Andi]

As in try another email account of yours to send the email, or ask a friend to mate.

[jmac]

Hey all,

Just wanted to say, I emailed Mark on 4/10, he got back to me on 5/10, I transferred the $$ on 5/10 and got the controller today 13/10. This includes a weekend so realistically I received what I paid for within 4-5 days of the funds clearing.

FYI I took some photos of the valve installed on my R34 GT-T. My mechanic helped me do this and I'm *very* happy. Initially it drove pretty much as standard (I don't have a standard turbo though, but computer + fuel system is stock), then wound it in... ummm a bit too far and Mark is not kidding, you only need to go one quarter of a turn at a time.

Let's just say I know what boost cut feels like. :lol:

So overall it's now set about 2/3 a turn in (i.e. more boost) from how it was sent to me and the car is hitting 13-14 PSI then easing back to about 12-13 PSI towards redline. Haven't noticed any significant spike other than maybe 1 PSI when boost initially kicks in, certainly not a drama. No detonation and the engine doesn't feel like it's leaning out. A PowerFC and dyno run will confirm this...

For the install we pissed off the piece of piping with the restrictor in it (running from the inlet side) and the entire "3-way" setup. Used fairly long lengths of new tubing so the valve can be hidden under the intake pod - will tidy this up later.

See the pics for what I mean. Took about 10 mins tops, then about 5 test drives around the block to adjust boost (run in 3rd gear).

Overall: happy customer.

[Andi]

Regarding the stock restrictor, how many people have removed this?

[kimbod]

Regarding the stock restrictor, how many people have removed this?

<{POST_SNAPBACK}>

I am extremely happy with my boost controller. Chucked the turbosmart one away.Initially when I put it on it didn't hold the boost as well as i thought it should. I made a few enquries. I pulled off and plugged the lines fron the factory solenoid and removed the plug from it as well.The boost rises quickly to 15 psi and drops only back to 13psi, not 8-9.

[DRIFTER]

great product, i'm using it to run 22 psi. the only drama i have had is when runing the hose from the intake manifold to the controller. the seat the ball sits on has built up with carbon and prevented it from sealing, this causes a loss of boost and has to be taken off the seat to get the boost back up. the best ways to stop this from happening is to run an inline filter, or source boost closer to the turbo where the air is cleaner.

[hijaked]

im gonna buy one.

ill see how it goes.

i have two boost controllers:

a profec a, was in a plastic bag in the glove box when i baught my car. the sellers husband said that it was in jap and that he wassnt able to tune it or some thing liek that?????

and a turbo smart old skool duel stage boost controller, the seller said its set at stock and 12 psi.... however when i flick the switch theres really no difference,,,, so im assuming somethings broke, havnt had time to look at it.

anyways, ill tak the easy way out and get this little thingy... hopefully it doesnt spike liek it says it doesnt... very hard to beleive tho.

wish me luck

[simark87]

Hello all, good to see all the discussion about the Turbotech..

And I especially get a buzz out of seeing my little design installed under the bonnet so keep the pics coming its great !!!

A few people have had difficulty reaching me lately as I had to go out of town for a few days for a family illness thing but all has returned to normal now..

Cheers

Mark

[ronald_r32]

well i am still waiting for mine nearly 2 weeks since i ordered it too

[hijaked]

hi mark

how much are you selling these things??

is it all over ebay???

cheers

[Links]

Ok.. finally got around to installing this bastard..

FCUK ME.. What a son of a gun to get the bloody vacuum hose off..

Took me about 20minutes and alot of grunt to get it off.. finally worked out that if you twist.. and twist.. and twist they come off.. Didn't find a restrictor..

Pretty much just replaced the T-Piece with marks controller.. first run.. boosted to about 0.75Bar.. finally got it down to about 0.65Bar.. spikes a little bit so still goto fine tune it..

haven't blocked off the T piece hose or the solenoid, just completely removed it from the wastegate hose..

Goto say.. good fun driving with it, comes on boost hard, might wind it up harder this weekend after service.

[Zman]

anyone have a pic of this in their r32?

[krush]

hey all,

another user to have just installed, and seem to be having problems. im certain i installed it all correct, but it seemed to over boost. here a pic of my setup..

PLEASE note the screw wasnt like that when i drove it, that was before i put it all back together (obviously). i am in doubts though that i have the right hose for pressure/vacuum, but thats the one everyone says.

after it overboosted, i had the car idelling and popped the hose off the bottom of the turbotech, there was no vacuum at all. im even starting to think the hose fell off the compressor housing, but its gotten dark now and i cant have a real good look.

can someone confirm my setup for me please.. or other opinions (beside the spring being stuck in the thread, the ball falling etc im sure the turbotech is working fine).

cheers

[tangcla]

I'll be ordering one of these things. If anyone knows me from other forums, I don't have a Skyline, but I will be needing one of these to limit boost.

I have an ST205 GT-Four with a twin-actuator design, and with the second actuator enabled the boost peaks at 1.55 bar (about 22-23psi) in third gear, and with the second actuator disabled it still gets 1.15 bar in third gear. if anyone knows the GT-Four the CT20b is a steel-wheel turbine, quite a large turbo for a street car, so it's very laggy (ie. fullboost at 4000rpm, a very large kick!):

I've just emailed Mark and hopefully I will get one of these at the discounted rate, even though I don't drive a Skyline it pays to be a forum whore sometimes...

edit: I was reading through this thread thinking it was pretty short - got to about the 9th page, then went to the last page. 25 pages! so I fast-forwarded and just sent Mark the damn email. Have I missed anything important??

Edited October 24, 2005 by tangcla

[WhatBrake]

anyone have a pic of this in their r32?

<{POST_SNAPBACK}>

Yeah wouldn't mind having a look at a pic

Cheers