Anybody Have Stage 2 Piper Cams installed?

[yacoub]

That looks a lot better with the unichip. You're not picking up a lot more peak numbers but the area under the curve is nicer for both hp and tq. I like the way it's seeing gains at the low and the high end of the rpm range.

[raygr]

Originally Posted by GTsRasta

To my surprise, the unichip did very well as a ECU solution to the Scion tC too. But unless I fully know the ins and outs of it's capabilities...I think a standalone would be better...or maybe you could give charlie a call.

If you're able to get the Hydra, that would even better (does anybody even have it???). Even though I hear it's a pain in the butt to tune vvt-i and use it's interface, it's one of the most capable standalone ECU's for the 2zz.

I agree I would have preferred a stand-alone, but I could not find one and I didn't want to mess with the instrument cluster issue. CarbConnection has a lot of experience with the Unichip so I trusted them. I tried to get Charlie's tune several times but he was unresponsive Plus I wanted something that I can tweak myself as we change things. We have a pulley now to install too

[2-Y-CHROMOSOMES]

Originally Posted by raygr

I agree I would have preferred a stand-alone, but I could not find one and I didn't want to mess with the instrument cluster issue. CarbConnection has a lot of experience with the Unichip so I trusted them. I tried to get Charlie's tune several times but he was unresponsive Plus I wanted something that I can tweak myself as we change things. We have a pulley now to install too

You could do it with an EFI. It still uses the stock ecu for speedo, other basic functions.

[GTsRasta]

Um...if I'm not mistaken...you could crudely tune VVT-i with Power Enterprise CAMCON. It's supposed to have a 16x16 grid for your disposal. Up until our two standalone options came out this year...this is what us 03+ DBW GTS guys have been using to tune with the greddy emanage ultimate piggyback ECU.



Here's a PDF file on how to wire it up, I'm sure you could find the VVT-i pinouts for your car if you asked around: http://www.powerenterpriseusa.net/ma...USDMCAMCON.pdf .

You can find these with a froogle.com search, or even looking on eBay. Here's our sticky on how to install and tune it (get the Lotus pinouts):

Originally Posted by Jesse IL

The purpose of this thread is to explain how to instal the CAMCON and tune it for maximum power.

What is the CAMCON?

The CAMCON is a piggyback unit made by Power Enterprise, a Japanese company.



As it says in the picture, it is a VVT-i (Variable Valve Timing-intelligent) controller. The VVT-i system on newer Toyota engine is used to adjust intake cam timing (both cams on new 2GR V6 engine) to extract additional power and efficiency from the engine. If you would like to read more about how the VVT-i system operates, here is a link to a Toyota technical document about it.

http://users.ameritech.net/trdcelica...xplanation.pdf

How does the CAMCON work?

The CAMCON works by intercepting the signal coming from the engine's camshaft position sensor. This sensor tells the ECU where the camshaft is, and the VVT-i system uses this camshaft position information to set the angle of the camshaft relative to piston motion (called the timing of the camshaft). The CAMCON offsets the signal, causing the ECU to think the camshaft is at an incorrect angle and forcing a correction. Because of this, there is only a certain range over which the CAMCON can adjust the camshaft position, due to the fault tolerance built into the ECU. IF you try to adjust the CAMCON beyond this range, you will go outside the fault tolerance of the ECU and cause a check engine light.

How do I install the CAMCON?

There are eight wires that need to be connected on the CAMCON. A link to Power Enterprise's installation PDF is here:

http://www.powerenterpriseusa.net/ma...USDMCAMCON.pdf

On the Celica GT-S, installation will be different for 2000-02 cars and 2003-05 cars. Installation for an automatic transmission car is exactly the same as for a manual transmission car. The ECU pinout for all Celica GT-S years, along with images of the connectors, can be found here:

http://users.ameritech.net/trdcelica...ECM_Pinout.xls

2000-02 installation, CAMCON wire color on left, vehicle connector, pin and wire color information on right:

Black - chassis ground
Red - Connector E2, Pin 16 (B-R)
Light Blue - Connector E4, Pin 24 (W)
Green - Connector E4, Pin 16 (O)
Orange - Connector E4, Pin 1 (Y-G) - side going to ECU
Brown - Connector E4, Pin 1 (Y-G) - side going to sensor
Purple - Connector E4, Pin 15 (L) - side going to ECU
Peach - Connector E4, Pin 15 (L) - side going to sensor

2003-05 installation, CAMCON wire color on left, vehicle connector, pin and wire color information on right:

Black - chassis ground
Red - Connector E9, Pin 1 (B-R)
Light Blue - Connector E10, Pin 34 (W)
Green - Connector E10, Pin 27 (O)
Orange - Connector E11, Pin 32 (Y-G) - side going to ECU
Brown - Connector E11, Pin 32 (Y-G) - side going to sensor
Purple - Connector E12, Pin 27 (L) - side going to ECU
Peach - Connector E12, Pin 27 (L) - side going to sensor

Can CAMCON change the lift engagement point?

No. The CAMCON can only advance or retard the cam relative to the factory setting.

How do I tune the CAMCON?

In order to extract maximum power from the CAMCON, you will need to have your car on a dyno or use the Gtech tuning method described in a different sticky. There is no good way to tune the CAMCON on the street.

The method for tuning the CAMCON is extremely similar to the method for tuning VVT-i on the Power FC. That method is described in this thread:

http://www.newcelica.org/forums/showthread.php?t=187685

You will want to do a number of different runs with the CAMCON set at different settings. For example, you would do your first run with all the settings at -5, the next with all the settings at -4, and so on. At the end, you would overlay all the dyno graphs and figure out which setting made the most power at a given rpm interval. You will then combine all these settings into your final tuned settings.

One thing that should be pointed out is that changes in CAMCON settings have the opposite effect that you might thing. Increasing the number retards the cam while decreasing the number advances the cam. This is the same convention as the Power FC.

The other thing that should be pointed out is that after three or so pulls on a stationary dyno, the engine will begin to heatsoak. On a car where no changes are made, you will see this as a drop in power with each successive run. Since we are concerned with small changes in power from run to run with the CAMCON, you will want to avoid this situation. A suggestion is that after every three pulls, allow the car to sit and cool down for a period of time. Unfortunately, this means possibly eating up expensive dyno time simply sitting idle. One possible solution would be to unhook the car from the dyno, drive it around to return it back to normal operating temperature, then go back and hook it back up. You would have to do this several times to get in enough runs to complete your tuning.

[charliex]

raygr. sorry if i appeared unresponsive, just got an insane amount of stuff on at the moment.

at the moment we're not planning on doing a self tweak option for cars that don't have the sector SC kit, or such, its just too hard to lock it down.

[raygr]

Originally Posted by charliex

raygr. sorry if i appeared unresponsive, just got an insane amount of stuff on at the moment.

at the moment we're not planning on doing a self tweak option for cars that don't have the sector SC kit, or such, its just too hard to lock it down.

Understood. No worries. I think the stars were just not aligned.

[raygr]

Originally Posted by 2-Y-CHROMOSOMES

You could do it with an EFI. It still uses the stock ecu for speedo, other basic functions.

Hmm... I was not aware a replacement EFI unit was available for the Exige S. The last I checked, it was not, except from ForcedFed I think, and it's off-road only and hella expensive. I'm may be out of date.

One of the challenges is that A) the unit has to be done and available for sale, and B) you have to feel confident some shop near you has the skill and willingness to install it.

[2-Y-CHROMOSOMES]

Originally Posted by raygr

Hmm... I was not aware a replacement EFI unit was available for the Exige S. The last I checked, it was not, except from ForcedFed I think, and it's off-road only and hella expensive. I'm may be out of date.

One of the challenges is that A) the unit has to be done and available for sale, and B) you have to feel confident some shop near you has the skill and willingness to install it.

Its a bit expensive but it is tuneable... offroad? hell my car is offroad and so are most aftermarket mods...Live a little.. it's worth it.
You could always ship the car to FF or call and ask Casey if he knows of a good tuner in your area. Both have there cost involved.

good luck. would love to see it work out for you.

[raygr]

Originally Posted by 2-Y-CHROMOSOMES

Its a bit expensive but it is tuneable... offroad? hell my car is offroad and so are most aftermarket mods...Live a little.. it's worth it.
You could always ship the car to FF or call and ask Casey if he knows of a good tuner in your area. Both have there cost involved.

good luck. would love to see it work out for you.

Hey thanks. I meant the FF system is not OBDII as far as I know, so I don't want to have that issue.

[GTsRasta]

Check out my thread for the greddy v-manage. They're on sale now for the 2zz Celica on eBay once you extend the search option to worldwide. Figure out the proper pinouts for your car, and I'm sure you'll be good to go to tune both VVT-i and VVTL-i.

[blackshifterkart]

10whp, and 20wtq, from 3500 on up the car just rips

[GTsRasta]

Originally Posted by blackshifterkart

10whp, and 20wtq, from 3500 on up the car just rips

Can you scan the before and after dyno or datalog? That would be nice .

[gt3guru]

A little out of date but I would like some more info on the stage 2 pipers. what do you know blackshifterkart?

[lotus_tunnen]

hmmm, these MWR graphs show that in fact St. 2 Cams produce more power with stock ecu. blackshifterkart, can we see some graphs? I'm curious as to compare individual graphs to MWR ones..

[Greenstreak]

I just had my car street tuned with Piper Stg 2s. I will be dynoing the car during the 3rd week of April to get numbers.

[andrewgotanelise]

Originally Posted by Greenstreak

I just had my car street tuned with Piper Stg 2s. I will be dynoing the car during the 3rd week of April to get numbers.

in an mr2 or eise?

[kortik]

it doesnt matter what car its still a 2zz, if he did a 2zz swap on his Spyder

[andrewgotanelise]

Originally Posted by kortik

it doesnt matter what car its still a 2zz, if he did a 2zz swap on his Spyder

Yes if he did a 2zz swap.

[Greenstreak]

Yes, it is indeed a 2ZZ swapped Spyder. Tuned with a PFC.

[andrewgotanelise]

what are your thoughts since i wont see the numbers till mid aprill apparently?