PowerLab GT35R Single Turbo Made 500whp on 91 oct.
#21
Right now I’m running a Walbro 255LPH fuel pump, I’m planning on upgrading to the Walbro 485 pump, at the same time I’ll be adding the CJM stage 1 return fuel system and DW 1000cc injectors.
Thanks! AH, the car has been a lot of fun; just need some stickier tires now!
Thanks! What pump? How much power?
Thanks! AH, the car has been a lot of fun; just need some stickier tires now!
Thanks! What pump? How much power?
you'll need to beef up the supply line. The stage 1 still uses the tiny stock hard line. Either make your own stainless 8an or get one from charles. The large volume of e85 combined with that tiny hard line will increase resistance and you will lose a lot of flow from that 485.
#22
you'll need to beef up the supply line. The stage 1 still uses the tiny stock hard line. Either make your own stainless 8an or get one from charles. The large volume of e85 combined with that tiny hard line will increase resistance and you will lose a lot of flow from that 485.
I recently ran into an issue with my car… it’s been running really rich at idle lately (also at very partial throttle ~5%), AFR in the 10’s… I noticed it about 800 miles ago, didn’t think much of it because the car was running great, hesitation gone, etc. …but I’m wondering what could possible cause this to happen? Any ideas?
#23
I noted you will be installing the stage 0 RFS. Pay mind to the loss of the driver side fuel damper.
I went though the whole lean resonance issue last year. Ended up adding an OEM damper back in on the Driver side and even added added a third on the passenger side. Works great now.
But If they had existed back then , I would have upgraded to the damper rails that Charles now offers.
I went though the whole lean resonance issue last year. Ended up adding an OEM damper back in on the Driver side and even added added a third on the passenger side. Works great now.
But If they had existed back then , I would have upgraded to the damper rails that Charles now offers.
I am not sure which fitting the OP has, but we will exchange it pretty cheap if he needs the newer ones!
#24
you'll need to beef up the supply line. The stage 1 still uses the tiny stock hard line. Either make your own stainless 8an or get one from charles. The large volume of e85 combined with that tiny hard line will increase resistance and you will lose a lot of flow from that 485.
#25
I think I might just have to upgrade to CJM’s stage 2 RFS then…
I recently ran into an issue with my car… it’s been running really rich at idle lately (also at very partial throttle ~5%), AFR in the 10’s… I noticed it about 800 miles ago, didn’t think much of it because the car was running great, hesitation gone, etc. …but I’m wondering what could possible cause this to happen? Any ideas?
I recently ran into an issue with my car… it’s been running really rich at idle lately (also at very partial throttle ~5%), AFR in the 10’s… I noticed it about 800 miles ago, didn’t think much of it because the car was running great, hesitation gone, etc. …but I’m wondering what could possible cause this to happen? Any ideas?
Im low on ideas about a spontaneously rich idle. Exhaust or vacuum leaks would make you read lean at idle.
#26
is your idle under closed loop?
Setup>O2 Sensors will tell you what RPM you are running closed loop.
If you are on closed loop, check your O2 feedback multiplier and see whats that's doing. Should be close to 1. If not you need to check your VE table.
That all assumes its not something mechanical.
Setup>O2 Sensors will tell you what RPM you are running closed loop.
If you are on closed loop, check your O2 feedback multiplier and see whats that's doing. Should be close to 1. If not you need to check your VE table.
That all assumes its not something mechanical.
I think I might just have to upgrade to CJM’s stage 2 RFS then…
I recently ran into an issue with my car… it’s been running really rich at idle lately (also at very partial throttle ~5%), AFR in the 10’s… I noticed it about 800 miles ago, didn’t think much of it because the car was running great, hesitation gone, etc. …but I’m wondering what could possible cause this to happen? Any ideas?
I recently ran into an issue with my car… it’s been running really rich at idle lately (also at very partial throttle ~5%), AFR in the 10’s… I noticed it about 800 miles ago, didn’t think much of it because the car was running great, hesitation gone, etc. …but I’m wondering what could possible cause this to happen? Any ideas?
#27
is your idle under closed loop?
Setup>O2 Sensors will tell you what RPM you are running closed loop.
If you are on closed loop, check your O2 feedback multiplier and see whats that's doing. Should be close to 1. If not you need to check your VE table.
That all assumes its not something mechanical.
Setup>O2 Sensors will tell you what RPM you are running closed loop.
If you are on closed loop, check your O2 feedback multiplier and see whats that's doing. Should be close to 1. If not you need to check your VE table.
That all assumes its not something mechanical.
Anyways, I finally downloaded the DLL files I was missing; here’s a screenshot of the Setup/O2 Sensors table:
Last edited by thatv35guy; 10-02-2013 at 08:14 AM.
#28
Ahh forgot you had a 48 box. There is not internal wideband control.
How is your wideband integrated into the Proefi?
Regardless, the Proefi is not making fueling corrections, so if you are running too rich when the car is fully warmed up, its from the main VE table.
You can check your coolant temp corrections on the cranking page and your AIT under the fuel trims tab
How is your wideband integrated into the Proefi?
Regardless, the Proefi is not making fueling corrections, so if you are running too rich when the car is fully warmed up, its from the main VE table.
You can check your coolant temp corrections on the cranking page and your AIT under the fuel trims tab
#29
Ahh forgot you had a 48 box. There is not internal wideband control.
How is your wideband integrated into the Proefi?
Regardless, the Proefi is not making fueling corrections, so if you are running too rich when the car is fully warmed up, its from the main VE table.
You can check your coolant temp corrections on the cranking page and your AIT under the fuel trims tab
How is your wideband integrated into the Proefi?
Regardless, the Proefi is not making fueling corrections, so if you are running too rich when the car is fully warmed up, its from the main VE table.
You can check your coolant temp corrections on the cranking page and your AIT under the fuel trims tab
I think it could possibly be the wideband O2 sensor? If I was actually running that rich (AFR in the 10's) would I have a stable idle? Although, it's reading exaclty where it should be at WOT... The car's not smoking at idle either.
Thanks for your help!
#31
The Innovative LC1 let's me do a free air recalibration, I'll give that a shot... might just replace the sensor altogether since I have a new one anyways.
#32
Update… after performing the free air recalibration the AFR is still reading in the low 10’s at idle… I’ve noticed that the ProEFI is triggering the following Faults:
- Ethanol Content Low Fault
- O2 a Target Variance EQ Exceeded
Over the past week I averaged 11 MPG… I didn’t go past half throttle the entire time, the car definitely seems to be running rich, not just a reading.
I’m at my wits end with this car… could my factory O2 sensors be causing this?
- Ethanol Content Low Fault
- O2 a Target Variance EQ Exceeded
Over the past week I averaged 11 MPG… I didn’t go past half throttle the entire time, the car definitely seems to be running rich, not just a reading.
I’m at my wits end with this car… could my factory O2 sensors be causing this?
#33
neither of those 2 faults really mean anything. They can be arbitrarily setup in the fault manager
Are you flex fuel? I only avg around 12mpg on E85 city driving easily.
1st thing I'd do is go to the VE table and once the car is warm, select the cell that is highlighted under idle and every cell touching it and reduce the VE by 20%. Make sure that leans out the idle. There's no load so even if it goes super lean and stalls it will be fine.
You need to figure out if its a VE table issue or a mechanical issue
Nothing OEM contributes to the tune.
Are you flex fuel? I only avg around 12mpg on E85 city driving easily.
1st thing I'd do is go to the VE table and once the car is warm, select the cell that is highlighted under idle and every cell touching it and reduce the VE by 20%. Make sure that leans out the idle. There's no load so even if it goes super lean and stalls it will be fine.
You need to figure out if its a VE table issue or a mechanical issue
Nothing OEM contributes to the tune.
Last edited by str8dum1; 10-14-2013 at 04:30 PM.
#34
Ok, on Friday I decided to replace the wideband O2 sensor, swapped it out and getting the same exact AFR reading (idle/partial throttle AFR in the 10’s).
I went back to your post (str8dum1) and I connected my computer to the ProEFI, started the car, found the highlighted cell at idle and on the VE table, and lowered it by 20%, did the same for the 8 surrounding cells. AFR shot up to the 14’s!
So, I guess it’s somehow a VE table issue and not a mechanical issue?
I guess I need to adjust the rest of the cells now too, the idle AFR’s consistently in the 13’s and 14’s, I just need to get the AFR up in the cells that I hit during daily driving, 20% throttle and bellow and below 3,000 RPM...
Thanks again Rich, I really appreciate all your help!
I went back to your post (str8dum1) and I connected my computer to the ProEFI, started the car, found the highlighted cell at idle and on the VE table, and lowered it by 20%, did the same for the 8 surrounding cells. AFR shot up to the 14’s!
So, I guess it’s somehow a VE table issue and not a mechanical issue?
I guess I need to adjust the rest of the cells now too, the idle AFR’s consistently in the 13’s and 14’s, I just need to get the AFR up in the cells that I hit during daily driving, 20% throttle and bellow and below 3,000 RPM...
Thanks again Rich, I really appreciate all your help!
Last edited by thatv35guy; 11-03-2013 at 11:56 AM.
#35
might be too late, but before you change the VE table, if you are seeing AFR off all over, you can make global changes by changing the setup>fuel system> primary injector offset. also make sure your base fuel pressure with no reference is set to actually what your FP reads. You can also play with injector flow rates.
But if you needed to make a 20% change, the fuel system changes are probably not what needs to be tweaked.
But if you needed to make a 20% change, the fuel system changes are probably not what needs to be tweaked.
#36
Well, I made the corrections Sunday night, I just trimmed the VE map below 2750 RPM & light load by 10% and 20% at idle (determined that light load range by looking at what range of cells (load) were being hit during “regular” driving).
I wasn’t sure if I’d want to make the changes global/throughout the map since the AFR was solid during WOT.
When I originally had my car tuned my tuner mainly did WOT tuning. After getting the car back I noticed some hesitation bellow 3000 rpm at light throttle, so I took it back to him and I think one of his employees did the “street tune”, seems like he dumped a ton of fuel at lower load to eliminate the hesitation.
So, the hesitation’s back but the AFR’s looking pretty okay... Need to install another fuel damper on the fuel rail now.
I wasn’t sure if I’d want to make the changes global/throughout the map since the AFR was solid during WOT.
When I originally had my car tuned my tuner mainly did WOT tuning. After getting the car back I noticed some hesitation bellow 3000 rpm at light throttle, so I took it back to him and I think one of his employees did the “street tune”, seems like he dumped a ton of fuel at lower load to eliminate the hesitation.
So, the hesitation’s back but the AFR’s looking pretty okay... Need to install another fuel damper on the fuel rail now.
might be too late, but before you change the VE table, if you are seeing AFR off all over, you can make global changes by changing the setup>fuel system> primary injector offset. also make sure your base fuel pressure with no reference is set to actually what your FP reads. You can also play with injector flow rates.
But if you needed to make a 20% change, the fuel system changes are probably not what needs to be tweaked.
But if you needed to make a 20% change, the fuel system changes are probably not what needs to be tweaked.
#37
So, quick update on my car… I just received my CJM Stage 1 RFS, going to install it along with DW 1000cc injectors, a Walbro 485 pump, and Continental ethanol content sensor (setting up ProEFI’s flex fuel functionality), hoping to install it next week and tune the following week!
Just wanted to share the update, it’s been so long since I’ve added a performance part to my car, lol…
Just wanted to share the update, it’s been so long since I’ve added a performance part to my car, lol…
#39
Coolant temps have been pretty steady, no issues yet (car started overheat last month, but it was caused by a bubble in the cooling system)… I’m going to upgrade the radiator and add an oil cooler this summer though.
#40
you also need a zeitronix ethanol gauge to send out a 0-5V output, as the 48box does not take in the digital output directly from the conti sensor.
Also, can you pretty please lend your car to Jason so he can develop the cruise control functionality??? PLEASE He just needs to determine CANbus channels. He already got it working on the porsche and his corvette.
Also, can you pretty please lend your car to Jason so he can develop the cruise control functionality??? PLEASE He just needs to determine CANbus channels. He already got it working on the porsche and his corvette.