Vortech Owner Thread & Setup Questions

[DJCarbine]

Originally Posted by Dezoris

Waiting for Perrin to get back to me on this but been having this odd issue with power cut after a 1st gear to second gear shift. Per this log.

After careful second gear shift, foot back on throttle then sudden power cut, for a millisecond, power comes back but weaker then knock at the higher end per log.

I have the same issue randomly as well. During a shift while in boost, the timing gets pulled and I notice a split second decrease in power along with an exhaust note change that sounds like really retarded ignition (only lasts less than half a second), I always thought it was just the normal transition from boost to vacuum to instant boost again, I figured it was just tip-in spark retard to prevent detonation.... maybe one of the tuners can chime in

If I shift and feather the throttle to roll into boost more smoothly, the ignition retard does not happen.

[NotSoJDM]

Originally Posted by DJCarbine

I have the same issue randomly as well. During a shift while in boost, the timing gets pulled and I notice a split second decrease in power along with an exhaust note change that sounds like really retarded ignition (only lasts less than half a second), I always thought it was just the normal transition from boost to vacuum to instant boost again, I figured it was just tip-in spark retard to prevent detonation.... maybe one of the tuners can chime in

If I shift and feather the throttle to roll into boost more smoothly, the ignition retard does not happen.

I've had this same issue on my completely stock engine with just a drop in filter. I don't think it's a vortech or tune issue. I hadn't seen any mention of someone else experiencing it until now.

I will say it became more pronounced for me when I put an exhaust on the car. But I have since removed it and the issue has lessened.

When I shift gears foot on the gas again I get a slight hesitation (you could hear the exhaust not change when I hate the exhaust installed) then all is well.

[Dezoris]

Originally Posted by DJCarbine

I have the same issue randomly as well. During a shift while in boost, the timing gets pulled and I notice a split second decrease in power along with an exhaust note change that sounds like really retarded ignition (only lasts less than half a second), I always thought it was just the normal transition from boost to vacuum to instant boost again, I figured it was just tip-in spark retard to prevent detonation.... maybe one of the tuners can chime in

If I shift and feather the throttle to roll into boost more smoothly, the ignition retard does not happen.

Well I am glad to know its not just my car but it happens to me a lot and the fact I got it on a log and also a knock correction after makes me uncomfortable.

I heard back from Chris at Perrin saying they cannot correct it in a tune.
The guy I used for dyno work said it may be built into the throttle mapping to protect against drive train shock.

But I would prefer an answer obviously, of why it can't be fixed and the real reason for it.

[Dezoris]

How much knock correction is normal in your logs. Do you guys see it often randomly and what RPMs?

[Foobar]

Originally Posted by Dezoris

How much knock correction is normal in your logs. Do you guys see it often randomly and what RPMs?

Which column on the ECUTek log shows that? I saw two columns relating to knock and it looks like they were all zeroed out in my last log. I have to make a new log this weekend so I'll check again.

Sent from my Nexus 4 using Tapatalk 2

[King Tut]

In a perfect world and a perfectly happy motor, both the Knock Correction and Knock Learn Value would be 0 at all times. The more random the knock is the more likely it is phantom knock and not real knock. My Knock Learn Value is almost always zero, and I normally only get some Knock Correction at throttle tip in. The thing you really have to worry about is if you have a negative Knock Learn Value and are seeing constant Knock Correction with full throttle and under boost. That means the ECU is consistently seeing knock in that area and is trying to do the best it can to correct it. The Knock Learn Value is more like a long term knock correction where the ECU says I have seen knock here before so I will pull timing even if I don't see knock where the Knock Correction is I see knock right now I am going to pull timing.

[Dezoris]

Originally Posted by King Tut

In a perfect world and a perfectly happy motor, both the Knock Correction and Knock Learn Value would be 0 at all times. The more random the knock is the more likely it is phantom knock and not real knock. My Knock Learn Value is almost always zero, and I normally only get some Knock Correction at throttle tip in. The thing you really have to worry about is if you have a negative Knock Learn Value and are seeing constant Knock Correction with full throttle and under boost. That means the ECU is consistently seeing knock in that area and is trying to do the best it can to correct it. The Knock Learn Value is more like a long term knock correction where the ECU says I have seen knock here before so I will pull timing even if I don't see knock where the Knock Correction is I see knock right now I am going to pull timing.

Thanks for that info. I am going through logs trying to establish what the "normal" conditions are for the operation. Everyone I talk to with the Vortech kit all say just go out and beat on it. I am not that type of person until I know where everything is at and where it should be and why.

[ft86me]

does anyone have solutions to safely make more hp on 91 with the vortech? smaller pulley?

did find an e85 flex fuel place by my house so maybe i'll go that route, but if i run out of gas and that place isn't near by. trouble haha.

would like to get close to 300 as much as possible.

[zenny]

can someone link me to the how to for swapping the pulley out on this so i can put my new one on or instruct me on how to do it ive been searching

[diirk]

Add me to the list of Vortech owners. Here's my build thread. http://www.ft86club.com/forums/showthread.php?t=20326

2013 SWP BRZ Premium
Pinnacle Tint
ISC Coil-Overs
StopTech Brake Pads
Rota Titans 17x9 +42
Ventus V12 245/40-17
TopSpeed Cat-back Exhaust
Vortech Complete System
OEM Mud Flaps
Bluebatmobile Reverse Light Overlay
Spyder 2 Tail lights

[reyruiz191]

Originally Posted by diirk

Add me to the list of Vortech owners. Here's my build thread. http://www.ft86club.com/forums/showthread.php?t=20326

2013 SWP BRZ Premium
Pinnacle Tint
ISC Coil-Overs
StopTech Brake Pads
Rota Titans 17x9 +42
Ventus V12 245/40-17
TopSpeed Cat-back Exhaust
Vortech Complete System
OEM Mud Flaps
Bluebatmobile Reverse Light Overlay
Spyder 2 Tail lights

Updated
If anyone wants to update their info or get added let me know.

[jamesm]

Originally Posted by King Tut

In a perfect world and a perfectly happy motor, both the Knock Correction and Knock Learn Value would be 0 at all times. The more random the knock is the more likely it is phantom knock and not real knock. My Knock Learn Value is almost always zero, and I normally only get some Knock Correction at throttle tip in. The thing you really have to worry about is if you have a negative Knock Learn Value and are seeing constant Knock Correction with full throttle and under boost. That means the ECU is consistently seeing knock in that area and is trying to do the best it can to correct it. The Knock Learn Value is more like a long term knock correction where the ECU says I have seen knock here before so I will pull timing even if I don't see knock where the Knock Correction is I see knock right now I am going to pull timing.

This is not correct. If knock correction learn value is zero, you likely have big problems . The parameter you're thinking of is 'ignition correction - fine' which is the value being applied from fine learning. Knock correction learn value is the currently applied advance value.

[King Tut]

Originally Posted by jamesm

This is not correct. If knock correction learn value is zero, you likely have big problems . The parameter you're thinking of is 'ignition correction - fine' which is the value being applied from fine learning. Knock correction learn value is the currently applied advance value.

My experience was from Visconti and FA20Club tunes, and I don't remember ever seeing a positive value for Knock Correction Learn Value. I was referencing seeing negative values for that which would mean the advance value is negative and it is pulling timing from seeing prior knock. I don't know what the advance tables looked like in my tunes though.

[jamesm]

Originally Posted by King Tut

My experience was from Visconti and FA20Club tunes, and I don't remember ever seeing a positive value for Knock Correction Learn Value. I was referencing seeing negative values for that which would mean the advance value is negative and it is pulling timing from seeing prior knock. I don't know what the advance tables looked like in my tunes though.

Basically KCLV is (IAM * <current advance value from the table>) - (corrections + compensations). So if you were seeing 0 constantly that would indicate either zero values in the advance map, a zero AM, or significant and constant correction. The corrections can push the value negative even after it's bottomed out the advance map. No bueno.