Lets talk tooning!
Originally posted by Angel Of Mercy
The fuel quality here is in dispute... here, its SHELL Premium 97 but some guys in the US say its the equivalent of RON91 in the US...
The thing is, i see others post their tune with much higher power outputs with similar mods... my last tune (which i tune myself) using only an SAFC II got me 250whp with the mods below... My downpipe and cat delete has been ordered but do they make that much of a difference? I've seen some posts with 330whp with similar mods but using either your Xede or some reflashes...
My SAFC II is pretty mild ranging from -4 (32k rpm) to -8 (72k rpm)(LT 10% HT 50%). I tried putting in higher numbers but the ECU seems to retard timing and i end up getting worst numbers with leaner mixtures.... Also, I'm boosting at 1.27bar or 18.5 PSI as higher boosts seem to generate less power.. maybe u can shed some light on this... sorry but i would bring my car over for you to custom tune if i could but the frieght charges would be beyond my budget
So I would appreciate any help you can give here..
The fuel quality here is in dispute... here, its SHELL Premium 97 but some guys in the US say its the equivalent of RON91 in the US...
The thing is, i see others post their tune with much higher power outputs with similar mods... my last tune (which i tune myself) using only an SAFC II got me 250whp with the mods below... My downpipe and cat delete has been ordered but do they make that much of a difference? I've seen some posts with 330whp with similar mods but using either your Xede or some reflashes...
My SAFC II is pretty mild ranging from -4 (32k rpm) to -8 (72k rpm)(LT 10% HT 50%). I tried putting in higher numbers but the ECU seems to retard timing and i end up getting worst numbers with leaner mixtures.... Also, I'm boosting at 1.27bar or 18.5 PSI as higher boosts seem to generate less power.. maybe u can shed some light on this... sorry but i would bring my car over for you to custom tune if i could but the frieght charges would be beyond my budget
So I would appreciate any help you can give here..
So we are sure that the ECU pinouts are the same right? If they are try to 91 octane maps and go back to that same dyno for AFR and fine tuning- The Xede is very easy to use
Evolving Member
Joined: Dec 2003
Posts: 345
Likes: 0
From: Brunei Darussalam
Originally posted by shiv@vishnu
It looks like you are octane limited--- just like us in CA. Without the ability to modify igntion timing, you're not going to get too far with the S-AFC. To make more power, you will need to get away from the knock threshold.
Just my 2c,
shiv
It looks like you are octane limited--- just like us in CA. Without the ability to modify igntion timing, you're not going to get too far with the S-AFC. To make more power, you will need to get away from the knock threshold.
Just my 2c,
shiv
How do we get away from the knock threshold? My SAFCII has a link up to the onboard knock sensor and the average knock is between 0-70 but occasionally spikes to 170-200. I dont know how accurate it is but its the same sensor that the Mit ECU uses...
Im not sure how much is too high...
All i'm looking for is 320whp... what else can i do?
Originally posted by Angel Of Mercy
An Aussie tuner, using the UNICHIP piggyback couldnt get it past 244whp (the original Dyno pics) and the UNICHIP has ignition timing control.. i took out the chip and replaced with AFC and got a much higher output then he did... at 256whp... he got 276ftlb of torque whereas now i got 290ftlb.
How do we get away from the knock threshold? My SAFCII has a link up to the onboard knock sensor and the average knock is between 0-70 but occasionally spikes to 170-200. I dont know how accurate it is but its the same sensor that the Mit ECU uses...
Im not sure how much is too high...
All i'm looking for is 320whp... what else can i do?
An Aussie tuner, using the UNICHIP piggyback couldnt get it past 244whp (the original Dyno pics) and the UNICHIP has ignition timing control.. i took out the chip and replaced with AFC and got a much higher output then he did... at 256whp... he got 276ftlb of torque whereas now i got 290ftlb.
How do we get away from the knock threshold? My SAFCII has a link up to the onboard knock sensor and the average knock is between 0-70 but occasionally spikes to 170-200. I dont know how accurate it is but its the same sensor that the Mit ECU uses...
Im not sure how much is too high...
All i'm looking for is 320whp... what else can i do?
Evolved Member
iTrader: (20)
Joined: Mar 2003
Posts: 4,941
Likes: 0
From: Danville/Blackhawk, California
I never used a Unichip on an EVO but the WRX version of the Unichip didn't replicate the crank angle signal waveform accurately which resulted in problems such as misfire and (presumably) improper coil charging. There is no other reason, other than the mapping done by the tuner, that you should be getting better results with fuel-only computer than with something that offers fuel and timing controls.
shiv
shiv
Evolving Member
Joined: Dec 2003
Posts: 345
Likes: 0
From: Brunei Darussalam
I'm already looking at the Tomei PONCAMs and HKS cam gears... The next bit is the manifold but i'm waiting for the turbine unit to go... and i'll consider the cost of a uprated turbine kit (T78 maybe) against the cost of a stock turbine with HKS manifold....
The Poncams are 260 degrees duration with 10.7/10.2 lifts.. any idea how much power this would produce?
http://www.tomei-p.co.jp/_2003web-ca..._cam_4G63.html
The Poncams are 260 degrees duration with 10.7/10.2 lifts.. any idea how much power this would produce?
http://www.tomei-p.co.jp/_2003web-ca..._cam_4G63.html
Originally posted by Angel Of Mercy
I'm already looking at the Tomei PONCAMs and HKS cam gears... The next bit is the manifold but i'm waiting for the turbine unit to go... and i'll consider the cost of a uprated turbine kit (T78 maybe) against the cost of a stock turbine with HKS manifold....
The Poncams are 260 degrees duration with 10.7/10.2 lifts.. any idea how much power this would produce?
http://www.tomei-p.co.jp/_2003web-ca..._cam_4G63.html
I'm already looking at the Tomei PONCAMs and HKS cam gears... The next bit is the manifold but i'm waiting for the turbine unit to go... and i'll consider the cost of a uprated turbine kit (T78 maybe) against the cost of a stock turbine with HKS manifold....
The Poncams are 260 degrees duration with 10.7/10.2 lifts.. any idea how much power this would produce?
http://www.tomei-p.co.jp/_2003web-ca..._cam_4G63.html
Evolving Member
Joined: Dec 2003
Posts: 345
Likes: 0
From: Brunei Darussalam
Its about the same with the HKS ones... and these just drop straight in.... hmm.. maybe i should go for the tomei cams instead... Tomei isnt that popular in the US issit? I've never seen any threads or comments on them...
BTW, if any of you guys are insterested in getting some Jap parts.. let me know...
Here is a useful site: http://www.evo-r.com/links.html
BTW, if any of you guys are insterested in getting some Jap parts.. let me know...
Here is a useful site: http://www.evo-r.com/links.html