03-24-2009
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#10
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Join Date: Nov 2005
Location: Cottage Grove
Drives: Silver '02 IS300, Blue '06 Suzuki SV1000
Posts: 5,293
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Re: 4b11t going into new RWD Hyundai coupe
Here's a little more info from AMS, And btw, the car is still running on 87 octane.
Quote:
UPDATES!!!!!!
Ok, so we did a little dyno testing on... Sunday. Yes, we are so excited about turbocharged cars that we were actually here on a sunday working on it! {thumbup}
Anyways, like Ivan said this car has an amazing fit and finish to it for its price point. It actually makes me want one. The stereo system is super cool, and I'm honestly a bit jealous! I'll get to what I'm good at though, hard facts!
First off, the car is on 87 octane! We are unsure of how this will effect the results but you can be sure that we will test that too! One thing we are definitely known for at AMS is our exhaustive testing procedures . Secondly, for those of you that are unfamiliar with dyno charts, I apologize at the complexity of these. Boost and air/fuel are at the bottom, and horsepower and toque is the top chart.
The air/fuel curve on all the charts has a rather weird bump in the mid-range and the car does not run overly rich up top like we are used to seeing with factory turbocharged cars. At this time it definitely does not seem that there is alot of horsepower to be made with fuel tuning alone.
I logged a couple pulls on the dyno with generic OBDII scanner and there is nothing fishy or special going on with these cars as far as I can tell at this point. The throttle stays all the way open until redline, it goes into a normal open loop fueling strategy at full throttle, and has normal 0-1 volt o2 sensors which are utilised during closed loop only. Without further adieu, here are the results!
This is the car in stock form on our dynojet at AMS.
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The next thing we though to do was to remove the air filter and see if there was any restriction at the current boost level. Since there is no MAF, and the turbo isn't moving very much air at this point, it appears that there will be no horsepower gains from running a different filter or intake pipe at this point.
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Of course the next logical step is to put a boost controller on it!!! Using just that, we gained a suprising 45whp in the midrange!!
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Suprisingly it responded very well to the boost controller, and didn't even cut me off until about 18.5 psi. Once it hits the boost limiter though, you have to shut the car off and turn it back on or it opens the BOV and refuses to run any boost!!! The MBC definitely smoothed the boost curve out quite a bit, and it does seem like the power delivery would be more linear on the street. I can't wait to get into these ECUs and see what they will really do!
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'02 Lexus IS300
'06 Suzuki SV1000: Back on the road and ripping hard as ever!
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