Friday, February 06, 2009 - 09:05 pm, by: Shadi Damouni(Shado)
Just got tuned, and i am very happy with the results. Please let me know in contrast to the mods how you guys find the power that i have achieved.
Max power 295 rwhp Max torque 420 nm (this figure impressed me the most) AFR's 11.8
In my opinion after owning high performance cars in the past, this baby feels like a weapon. I gained 30rwk from the tune and with boost coming on as early as 2200 rpm traction can be negligible
The car has absolutely transformed. After owning a auto, the manual torsen combo is so comforting under load, feels solid in that area.
Please let me know what you guys think of the results.
Friday, February 06, 2009 - 11:10 pm, by: Shadi Damouni(Shado)
Ty, its the stock turbo. CT15B.
I do have one issue that i need to resolve. I would like to run 1 bar of boost, but the tuner told me that the engine made a slight ping. When i told him to increase the fuel ratio, he said no its a ignition timing issue. i.e needs adjusting.
My duty cycle is only 40% at .9 bar, and 45% at 1 bar, AFR's 11.8.
I dont understand, i would think that increasing the fuel would stop detonation to a certain degree. Considering i still have so much fuel to play with.
Saturday, February 07, 2009 - 12:24 am, by: Daniel Clarke(Dieseltrain)
No... It obviously needs less timing with the more boost. Most detonation occurs from timing, not fuel. You can run Afr's in the 13's ( like enduro cars ) as long as the timing is correct
Not a bad effort mate .
Just read you are using an Apexi Neo, there is your detonation problem right there... .To remove fuel they decrease the voltage from the AFM or Map sensor thinking the car is actually running less boost. However if used lightly can be a decent tool .
If the settings are subtracting, then adding some value back in should increase voltage signals giving slightly more fuel and less timing... But i would only recommend this on a Dyno.
I Guarantee it will detonate its arse off on the street, if it was pinging on the dyno @ 1 bar, as there is more load on the street. Quite a few tuners dont use a hard enough ramp rate to tune with. IN fact the lower Boost Map in the Ecu WILL have more ignition timing in it, so thats why your experiencing detonation.
Saturday, February 07, 2009 - 09:09 am, by: Shadi Damouni(Shado)
Nickel, X speed did the tuning.
Daniel, i should also mention that the detonation was very minor, in the top end after 5500 rpm. They even told me that it was that minor that it would not be detrimental to the engine at 1 bar. In my opinion detonation minor or major is bad, and .9 bar is more than enough for a daily driver.
Heres the catch, detonation occurred at .96 bar when i tested it once myself. Previous to the tune and increased boost, my car was boosting to .92 just off the bolt ons and was obviously not detonating, which leads me to believe that the .04 bar increase would not be the cause of detonation, thats why i think its fuel related.
Saturday, February 07, 2009 - 02:22 pm, by: Shadi Damouni(Shado)
I just went back to x speed today, and the service and honesty is the best i have dealt with to date, they scratch my rear bumper with the O2 sensor and have offered to respray the whole bar. Tune is sorted. I can vouch for this performance centre 100% full of great advice.
Saturday, February 07, 2009 - 03:38 pm, by: Shadi Damouni(Shado)
No change in settings. Just put boost back to .9, and a fresh tank of 98 ron. No detonation at all and no noticeable power loss. This was originally the perfect tune, but it was my hp greedy mind that wanted the 1 bar. She sizzles now diesel, just blew away a vz commo 300kw. The bloke was shocked. He started asking, is that an auto, is it a v8?
Saturday, February 07, 2009 - 06:55 pm, by: Callum Finch(Sigeneat)
Out of clear ignorance and intrigue, is it normally "safe" to try and get a stock single turbo setup to 1bar?
I always thought the turbo was a similar model to what you find in the twin turbo variants and i dont hear many people pushing upwards of 1.2bar (~17psi?) through the pair.
Sunday, February 08, 2009 - 09:59 am, by: Shadi Damouni(Shado)
It is considered of what i have read on the chaser forums to be fine to boost to 14 psi or 1 bar. Obviously boosting any turbo is going to affect longevity of the snail. But as you stated callum vvti on other forums are boosting to 17 psi, at high risk in my opinion.
Both x speed and c red have advised that 1 bar is fairly safe depending on condition, age of the turbo. But this goes for any ceramic set up.
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