T04z Gtr Results

[StageZilla]

hey wet gtr, autronics is what im running with my engine combo (jun 2.7L stroker, hks t04z) and everyone has said u need an autronics CDI after 500rwhp or so, and they are bloody dear, i think i paid $1300 for it

that allows u to run MSD coilpacks (cheap as) and remove your ignitor pack.

good luck

Brad

Edited October 20, 2005 by StageZilla

[WetGTR]

hey wet gtr, autronics is what im running with my engine combo (jun 2.7L stroker, hks t04z) and everyone has said u need an autronics CDI after 500rwhp or so, and they are bloody dear, i think i paid $1300 for it 

that allows u to run MSD coilpacks (cheap as) and remove your ignitor pack.

good luck

Brad

<{POST_SNAPBACK}>

Hi Brad,

Nice - a JUN 2.7 strocker, HKS T04Z & to top it off an Autronics running the show!

A nice nice package there

I'm running around 560hp (417kw) @ wheels & still have standard ignitor and spitfire coil packs. I haven't got big issues but I'd like to know what benefits I'd get if I buy the Autronics CDI - wow $1300 thats no small change!!!

Others like R32-GTS run even more power then me & still retain their standard system.... why spend $1300 or even half that if it works atm. There must be something I'm missing that I don't know about?

Any idea's?

Adam

PS Autronics CDI running MSD coil packs seem's like a popular setup for a GTR, must work well.

[R32-GTS]

Anthony's need4spd GTR with twin to4z is now running close to 900rwhp but runs splitfire coils and a HKS twin power spark amplifier. They are meant to be very good.

[Mik]

There are a bit soft over there, one sub 11 and it's goodbye over here.

cheers

<{POST_SNAPBACK}>

It depends...I know of a car in Sydney that made at least four 10 second passes with no cage.

[WetGTR]

Anthony's need4spd GTR with twin to4z  is now running close to 900rwhp but runs splitfire coils and a HKS twin power spark amplifier. They are meant to be very good.

<{POST_SNAPBACK}>

Had a look at Nengun, they sell the HKS Twin Power Unit for $517.23 which is almost 1/3 the cost of the Autronics CDI unit.

I wonder which one would be the superior product?

R32-GTS, your not running any of these aftermarket CDI units & you have 600 awhp.

When do we need to get these CDI units or is there some other benefit in getting them anyway, maybe opening up the gap of the spark plug to .8 which will give out a better burn, maybe they run better economy with a larger gap and stronger spark?

I read the HKS decription but it mostly states that its good for a smoother rev at high rpm and stops misfires.

Any idea's?

[R31Nismoid]

Adam, you know what im gonna say dont ya :lol:

ring "the man"

But i'll tell ya what he'll say, get the HKS Twin power thingy

Lots of em using it here, usually above 400rwkw.

cheers - ash

[WetGTR]

Adam, you know what im gonna say dont ya  :lol:

ring "the man"

But i'll tell ya what he'll say, get the HKS Twin power thingy

Lots of em using it here, usually above 400rwkw.

cheers - ash

<{POST_SNAPBACK}>

Hi there Ash!!

I know, I know, your right!

I feel like I bug him at times ringing him up and always asking for his advice, but I know the answer he gives is the right one.

What would we do without him....

Those HKS Twin Power CDI's don't look too bad at the price.

How ya been anyway Ash?

The man has been so busy lately, at times he doesn't pickup his phone for days.

Thanks for the advice.......again - it's a nice reminder that if ever in doubt, make a call.

Do you know of some of the benefits Ash of getting an aftermarket CDI Unit?

Thanks,

Adam

Edited October 21, 2005 by WetGTR

[R31Nismoid]

not exactly sure, but we were going to do it with my RB25 if i didnt get EPA'd...

Basically the stock coils couldnt put enough spark out to ignite the better fuel we were using for a while with the boost we were running.

The simple fix was the HKS gizmo basically

[WetGTR]

I hate the EPA.....very bad dudes

Hope you get through it, they are my biggest fear!!! I hate those guys.

Sounds like you had a problem and this was the solution.

Might make a call and see if its a good thing to do.

There is also a weight difference between the Autronics and HKS CDI where HKS weight is 450g the AUtronic CDI weight is 750g. Maybe more electronic stuff in there.

Thanks for your help Ash!

[R31Nismoid]

hehee, i can see him looking

[R32-GTS]

I think im going to try the HKS twin power soon and see how it goes. Should be able to open the plug gap back up to 1.1mm for a better burn etc.

[WetGTR]

I think im going to try the HKS twin power soon and see how it goes. Should be able to open the plug gap back up to 1.1mm for a better burn etc.

<{POST_SNAPBACK}>

haha, you never know..... he might be reading this now, please tell us something

I thought the stock gap was 0.8mmmm on the plugs.... why 1.1mm

You doing this any time soon R32-GTS?

I am very interested to see what the before and after results would be.

Will you let us know how it goes?

Edited October 21, 2005 by WetGTR

[Shaun]

Hey, you guys that are running the Autronics; are they SMC's? I've heard that you need the CDI's when using the SMC with RB engines (sounds like im speaking in code!). Im using an Autronic SM4 on my RB26 with a GT35, as ive been told that the SM4 doesnt have/cause any spark issues and the CDI is not needed.

Just wondering.

Also, any problems with MAP and 6 throttles? Hows drivability?

Thanks,

Shaun.

[StageZilla]

Hey, you guys that are running the Autronics; are they SMC's? I've heard that you need the CDI's when using the SMC with RB engines (sounds like im speaking in code!). Im using an Autronic SM4 on my RB26 with a GT35, as ive been told that the SM4 doesnt have/cause any spark issues and the CDI is not needed.

Just wondering.

Also, any problems with MAP and 6 throttles? Hows drivability?

Thanks,

Shaun.

<{POST_SNAPBACK}>

Hey mate im running the autronics SMC ecu (was fine on 360rwhp) and now after the build im running the autronics cdi as well, drivability is bloody perfect, and cold starts etc are as good as factory. (rebuild is still underway, aiming for high 600rwhp mark)

WetGTR if i was u i'd double check u can run the HKS CDI with autronics, because ive heard the autronics cdi is the only one to run with the ecu.

www.autronics.com have some info on the cdi's voltage outputs which ive been told is superior to the hks unit, and similiar ones.

good luck and ask some reputable shops first, not just 1, try an autronics tuner and he will know the benefits etc

remember u get what u pay for

cheers

Brad

[WetGTR]

Shaun: I'm running the Autronics SMC with stock ignitor and spitfire coil and have no real issues atm. Have to agree with StageZilla that drivibility is so perfect with cold starts that are like factory. No problems with 6 throttle bodies. Can't really say anything bad about the Autoronic unit except price and not as many tuners as say the Power FC but worth every cent.

Brad: I've read the information on the Autronics Website relating to their CDI unit. It really does sound like a superior product then say the HKS one. Just trying to find out the benefits of a better CDI system cause some people spend over $1000 on them and if I'm to do the same, you'd like to know why you need it and what benefits your going to get.

Did you have to upgrade to the CDI unit because of a problem or issue or was it just done because it was part of your build?

I know the HKS unit is a plug and Play design but the Autronic unit doesn't look complicated to wire in.

Edited October 21, 2005 by WetGTR

[StageZilla]

Shaun: I'm running the Autronics SMC with stock ignitor and spitfire coil and have no real issues atm. Have to agree with StageZilla that drivibility is so perfect with cold starts that are like factory. No problems with 6 throttle bodies. Can't really say anything bad about the Autoronic unit except price and not as many tuners as say the Power FC but worth every cent.

Brad: I've read the information on the Autronics Website relating to their CDI unit. It really does sound like a superior product then say the HKS one. Just trying to find out the benefits of a better CDI system cause some people spend over $1000 on them and if I'm to do the same, you'd like to know why you need it and what benefits your going to get.

Did you have to upgrade to the CDI unit because of a problem or issue or was it just done because it was part of your build?

I know the HKS unit is a plug and Play design but the Autronic unit doesn't look complicated to wire in.

<{POST_SNAPBACK}>

i only added mine ready for the new setup as my tuner said its a neccessity at that power level and they said the spark output is huge compared to stock. like spark can jump 10cm rather than 1cm or so, but thats only what ive heard from experts, not my own experience, wiring diagram is on the site and is easy, only about 10 wires all up which aint difficult

i read the highest voltage output is 500 volts hence the CDI 500R name i think, wouldnt wanna touch the coil when it sparks

[WetGTR]

I think I'II keep my hands right away............ way away

Wow Brad, you really went all out when you did your build, very nice setup you have. Any plans for your monster

Regarding this CDI thing, might have to call the man- as Ash suggested and find out what he has to say.

I'm sure if I had to pick, it would be the Autronic 500R CDI unit. They make some real top of the line stuff and since I already have the Autronic SMC, that just seems the logical way to go.

When I speak with him, I'II post up what he has to say - if I can remember everything.....

[R32-GTS]

Well as of tonight i have no second gear any more haha. Accelerating in second gear and then a loud bang. Managed to drive it home in 4th though. All good.

[Sydneykid]

I can't speak about the Autronic CDI, but we have used the Motec ECU and CDI on a few cars. Firstly I should say that we don't use the Motec CDI with standard coils (or Spitfires for that matter). CDI fires multiple times per ignition cycle and so it needs a coil that has a faster recovery time than the more normal one fire per ignition cycle. So we use Mercury outboard coils as they are designed for use with CDI. I believe this is the same system that Wilson and/or Munro are using.

What we have found is;

1. The plugs (copper NGK's) last a lot longer before they start to break down.

2. There is lees unburnt fuel in the oil samples

3. There is less carbon deposits in the combustion chamber

4. The exhaust gas temperature is lower, ~75 degrees is not unusual

5. The exhaust valves are not showing as much signs of distress, so we have extended their service life

6. The hot start is much easier, without the CDI at times it would take a few cranks to start

7. We picked up around 55 ft lbs of torque on the engine dyno at 5,500 rpm, with good increases from 3,000 rpm to 8,000 rpm

8. Obviously this translates to horsepower increases, around 40 bhp in most spots over 5,250 rpm.

9. None of this happened wthout tuning, we were able to advance the ignition a little without detonation, we were able to increase the fuel (Elf Turbo Max) without changes in A/F ratios, we were able to hold the boost level, but increase the airflow. These are all indicators of more complete combustion, which is exactly what you would expect/want from an ignition upgrade

The bottom line don't expect to bolt on a CDI and pick up 50 bhp, it isn't that simple.

cheers

PS; if you think the Autronic CDI is expensive, wait until you price the Motec.

[WetGTR]

Well as of tonight i have no second gear any more haha. Accelerating in second gear and then a loud bang. Managed to drive it home in 4th though. All good.

<{POST_SNAPBACK}>

Oh no!!

Not good!! Need something stronger now. Maybe something like the OS Giken 5 gear set upgrade.

Not a cheap item! I thought mostly 3rd gear goes on a GTR box not second.

Were you just trying to accelerate or something more like clutching it?

Hope my box keeps holding...... runnning that redline gear oil in it - that will hold it together won't it..... (I'm expecting alot from an oil arn't I hahaha)

What are you thinking of doing now R32-GTS, having 600hp has it down side don't it?

cheers

Adam