IS250 S/C installed
10-29-10, 10:45 AM
#47
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Synapse bov was fine tuned.
Only port A needs to be connected to vac/boost source.
All issues with iddle solved (port B of BOV was leaking vacuum)
Boost is 7.1 psi without any issues but i have to admit that i'm careful and don't keep the car at red line for long cause i'm running lean (12.5-12.8).
Stiil waiting from Andy at Elite for the moded AEM FIC6.
With the AFR at 11.5-12 the engine has no problem at all to hold 7.1 psi of boost. If the FIC6 works AFR issue will be solved once and for all.
6th gear now goes all the way to red line and isn't like overdrive anymore.
Consumption is the same as stock when you go normal.
When you step on it consumption goes from 9 to 12 liters per 100 kilometers.
Have ordered Fidanza Flywheel with spec 2 sprung clutch and waiting to receive it next week.
That's all for now.
10-29-10, 12:33 PM
#48
Elias sounds like everythings coming along nicely. I can't wait to see the results after everything is complete. I'm curious to see the times from 0-60 and 1/4 mile as well. This is very promising I've been contemplating putting a SC kit together, if the AEM FIC6 works I'm going to take the dive part by part. Keep us updated thanks!
10-29-10, 08:24 PM
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Elias sounds like everythings coming along nicely. I can't wait to see the results after everything is complete. I'm curious to see the times from 0-60 and 1/4 mile as well. This is very promising I've been contemplating putting a SC kit together, if the AEM FIC6 works I'm going to take the dive part by part. Keep us updated thanks!
Our engine can handle significant amounts of boost safely if AFR and timing are where they need to be.
Up to 5 psi there is no need for any management system.
I can't figure out yet why on 350's the kit produces 5 and on 250's 7.
I believe that Andy will finally make FIC6 work for our rides.
Perhaps with the FIC installed there will be need for a bigger fuel pump or injectors but we need the FIC first to check.
10-29-10, 08:26 PM
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10-30-10, 08:50 AM
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Not trying to be a smarty-pants but this will help explain.
3.5L divided by 2.5L = 1.4
5psi multiplied by the ratio of 1.4 = 7psi........
Some boost calculations are surprisingly straight forward.
Thanks for the SC posts and looking forward to the modded AEM F/IC. Would be nice if it could be used to tune non - boosted IS250's as well.
3.5L divided by 2.5L = 1.4
5psi multiplied by the ratio of 1.4 = 7psi........
Some boost calculations are surprisingly straight forward.
Thanks for the SC posts and looking forward to the modded AEM F/IC. Would be nice if it could be used to tune non - boosted IS250's as well.
11-01-10, 11:04 AM
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11-01-10, 11:13 AM
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New Dyno
Here is the new Dyno from Dastek Dynometer which measures closer to US Dynos.
BHP 270.2 or 273,75 PS
TORQUE 296,1 N/m or 29,66 Kg/m or 218,29 Lb/Ft
Boost at 7.1 PSI
We finally did a road test with a friend's stock IS250 M/T.
I was 6-7 bodies ahead at 1/2 mile.
Big difference.
My buddy already started to think about the project.
Biggest obstacle is how to tell or hide it from his wife.
BHP 270.2 or 273,75 PS
TORQUE 296,1 N/m or 29,66 Kg/m or 218,29 Lb/Ft
Boost at 7.1 PSI
We finally did a road test with a friend's stock IS250 M/T.
I was 6-7 bodies ahead at 1/2 mile.
Big difference.
My buddy already started to think about the project.
Biggest obstacle is how to tell or hide it from his wife.
Last edited by pepos; 11-01-10 at 11:22 AM.
11-01-10, 11:15 AM
#56
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11-01-10, 11:21 AM
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Just make sure you're not trying to up the boost. I sat down with Kurtz a while back, and tried to figure out wht we couldn't boost more than 5-7psi on an IS250-350. I build turbo cars (Supras/Aristos/GS300/SC300, etc). And after extensive reading I pretty much figured out, 5psi is fine, after that, you start running out of fuel. AFTER 5-PSI, up to 7.5 the problem is the timing is too advanced for the engine.
So stay under 7.5psi. If you want to go more, you need to install a reliable meth/water injection system.
And even then, it'll be sketchy.
Jeff
So stay under 7.5psi. If you want to go more, you need to install a reliable meth/water injection system.
And even then, it'll be sketchy.
Jeff
11-01-10, 11:29 AM
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Just make sure you're not trying to up the boost. I sat down with Kurtz a while back, and tried to figure out wht we couldn't boost more than 5-7psi on an IS250-350. I build turbo cars (Supras/Aristos/GS300/SC300, etc). And after extensive reading I pretty much figured out, 5psi is fine, after that, you start running out of fuel. AFTER 5-PSI, up to 7.5 the problem is the timing is too advanced for the engine.
So stay under 7.5psi. If you want to go more, you need to install a reliable meth/water injection system.
And even then, it'll be sketchy.
Jeff
So stay under 7.5psi. If you want to go more, you need to install a reliable meth/water injection system.
And even then, it'll be sketchy.
Jeff
Even 7.1 psi is too high, i know that.
I'm already looking for a reliable AFR and Timing tuning gadget and i need all the help i cab get on that.
Now that the wheather is cold here in Greece the car works very nice even with the stock ECU.
I'm afraid how the engine will react on summer at 110 and above.
But the thing is that the inner (pistons rods etc) of the engine can take nicely 7.1 psi.
I'm also looking for colder plugs but no solution yet.
Thanks a lot anyway.
Last edited by pepos; 11-01-10 at 11:33 AM.
