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New 1/4 mile video SC400 12.08 @ 114.98.

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Old 03-21-11, 04:55 PM   #16
KC95SC400
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Thanks for all the compliments guys.

Keep in mind that I just installed an Adaptronic ECU. My best time on the stock ECU with a MAFTPro (for sale) was a 12.047.

The Adaptronic pretty much tunes fuel itself (with a little help from the user / tuner) but I haven't really tried playing with timing. With all the water / meth I'm spraying I probably have a ton of room to play with it but I'm considering having it dyno tuned to see if anymore power can be had.

KC
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Supercharged 96 Lexus SC400. Water / meth injection. Ross pistons. The "thick" factory rods.Gasket matched intake and heads. ARP head studs. Cometic head gaskets. ACL rod bearings. Flipped intake. Supra LSD. Built transmission. PI converter. Supra Tokico shocks with swift lowering springs. IMF headers. X-pipe. 2.5 inch exhaust. Adaptronic. Suprastick. Much more.

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Old 03-21-11, 08:03 PM   #17
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hey are you using electric fans now?
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Old 03-21-11, 08:37 PM   #18
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hey are you using electric fans now?
Yes since installing the supercharger. I'm using fans that came out of a 96ish 4cyl Toyota Camry.

Also replaced the hydraulic fan pump with and LS400 fan bracket.

KC
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Old 03-22-11, 09:40 PM   #19
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does your car ever overheat? even after you ran it a couple times on the drag strip?

Impressive numbers BTW. Its must be nice having to be able to do everything yourself..
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Old 03-23-11, 07:19 AM   #20
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Very respectable times.
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Old 03-23-11, 08:18 AM   #21
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does your car ever overheat? even after you ran it a couple times on the drag strip?

Impressive numbers BTW. Its must be nice having to be able to do everything yourself..
It gets a little hotter than I would like but I wouldn't say it overheats. On that 3rd and last run (the run in the video) it got to 198 degrees. It was already fully warm, I hadn't let it sit and cool.

I have a replacement OEM style radiator, lots of water, lots of water wetter, a 160 t-stat (stock is 180) and the Camry fans.

I've been thinking about a fan upgrade since summer is about here although the Camry fans do move quite a bit of air so I'm not sure if it will do much.

Also looking into getting it on a dyno to tune the timing. There could be allot more power there.

KC
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Old 03-24-11, 06:05 AM   #22
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KC, have you thought about switching to e85 and getting rid of all that meth/water injection complication?
it's cheap, 105 octane, absorbs much more heat when it's injected (opposed to gasoline), and it smells cool. just get some injectors and a fuel pump.

i bet you'd gain power by switching the fuel alone, not even messing with timing. it is awesome for boosted cars.
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Old 03-24-11, 02:07 PM   #23
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KC, have you thought about switching to e85 and getting rid of all that meth/water injection complication?
it's cheap, 105 octane, absorbs much more heat when it's injected (opposed to gasoline), and it smells cool. just get some injectors and a fuel pump.

i bet you'd gain power by switching the fuel alone, not even messing with timing. it is awesome for boosted cars.
No..... and yes.......

I have thought about E85 but I'd probably keep the water meth regardless. Water meth is great stuff and E85 would not cool the intake charge at all.

What is the ratio as far as injectors. I'm currently seeing low 13ms injector times at WOT / max rpm / max boost so I still (assuming max of 20ms) have quite a bit of injector left. But, you have to keep in mind that the water meth is quite a large part of my fueling at this point.

KC
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Old 03-24-11, 02:35 PM   #24
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me and a few friends who have experience with it have had to add ~30% more fuel to get the AFRs back down to the 11s-10s in boost.

i had a haltech PS2000 and jsut did "+30%" from where it was on gasoline, and it was very close to the gasoline AFRs.

other people say you need 25-30% more fuel. does your EMS show overall injector duty?
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Old 03-25-11, 12:29 PM   #25
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me and a few friends who have experience with it have had to add ~30% more fuel to get the AFRs back down to the 11s-10s in boost.

i had a haltech PS2000 and jsut did "+30%" from where it was on gasoline, and it was very close to the gasoline AFRs.

other people say you need 25-30% more fuel. does your EMS show overall injector duty?
No, it doesn't show duty just miliseconds. But, using this calculator - http://www.stealth316.com/2-calc-idc.htm - I come up with 78.75% when inputing 7000rpm (slightly more than I usually go) and 13.5ms (slightly more than the max shown on my log of a drag run).

I honestly don't have any plans on using E85.

KC
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Old 03-25-11, 07:36 PM   #26
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You are an inspiration to what I want exactly do one day! Keep up the good work!
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Old 03-25-11, 11:27 PM   #27
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really a heater core didnt help with that set up?!

anyway screw the 50/50 water meth thing 80/20-90/10 meth to water use it for fuel moarrr timing. i run 100% meth in the evo.

and another thing to ponder idk how that intake mani is set up but it looks to hit 2-3 and 6-7 more than 1-4 5-8.
8 .4 -.6's direct injection. made a world of difference on my car.

you are a step or 2 colder with the plugs? play with the gap a little.
just food for thought.
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Old 03-27-11, 11:27 AM   #28
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really a heater core didnt help with that set up?!

anyway screw the 50/50 water meth thing 80/20-90/10 meth to water use it for fuel moarrr timing. i run 100% meth in the evo.

and another thing to ponder idk how that intake mani is set up but it looks to hit 2-3 and 6-7 more than 1-4 5-8.
8 .4 -.6's direct injection. made a world of difference on my car.

you are a step or 2 colder with the plugs? play with the gap a little.
just food for thought.
By heater core I assume you mean intercooler? Yes it did help without water injection and yes it does help a little with water injection. But, IMO its not worth having one on especially with the water meth injection. The water meth cools WAY better than the intercooler I had. It is not unusual to see intake temps with boost BELOW the ambient temperature.

I like my mix. I'm actually using about 66 meth and 33 water by volume. Yes the meth does have a higher octane than gasoline but water cannot burn so I think it does more to add to the octane than meth alone would.

Direct injection sounds nice but is more time and money then I'm willing to spend when my current setup is working.

I'm using Denso IK27 plugs which are 2-3 steps colder than the stock 6 heat range.

KC
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Old 06-28-11, 04:52 PM   #29
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You have a m3 killa!
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Old 06-28-11, 04:57 PM   #30
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Valve body sent to IPT, rebuild kit from IPT, Dragon convertor, disconnected no 4 solenoid, oil cooler, suprastick trans controller, line pressure cable as tight as it can possibly go, dex3 fluid.

I think thats it, LOL.

I'm looking into getting some cams.

KC

Listen man.., the last thing I want you to do is blow your motor. You're clocking low 12's bra, what more do you want?
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Old 06-28-11, 04:57 PM
 
 
 
 
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