Hydra Nemesis

[oab_au]

Originally Posted by TomsSVX

I have already taken the unit out of Mike's car and called it quits on the base maps. They are good enough to let the car run, and run well.

Also, I have installed it onto my SVX w/ the stage3 on it... Honestly, I am at a loss for words.

Tom

"Honestly, I am at a loss for words. "

I don't believe it, give it a go Tom, you can do it.

What is it, that you notice the most difference in?

Harvey.

[TomsSVX]

Originally Posted by oab_au

"Honestly, I am at a loss for words. "

I don't believe it, give it a go Tom, you can do it.

What is it, that you notice the most difference in?

Harvey.

Well, first off, the user interface is VERY friendly, so making appropriate changes are relatively simple. It still requires intelligence of what is needed though.

The results for my car thus far are limited to what I felt, it was raining like hell and I didn't take my eyes off the road for very long. Acceleration is smooth for the first time, granted it is still on the rich side for an AFR. Timing is actually pretty high under full load. 23-29*btdc at 9psi from 4500-7000 rpm yet didn't get a single hint of knock (audible or from the sensors). The car pulls like a freight train, and there is more to get out of it still. Timing doesn't magically drop off, and the fuel that I have always wanted is now there.

Now this is a personal conjecture but I feel the fuel was my main problem with the ECUtune Roms. It never seemed to have enough on tip-in and thus tossed the whole rev range out. I paid specific attention to tip-in enrichment and have it set to what I believe is a perfect level. Thus paving the way for a smooth torque curve and constant acceleration.

So in short, I couldn't be happier with the investment of $ and time. Totally worth it. Now I need to book some dyno time to see what kind of power it will actually make dialed in properly.

Tom

[oab_au]

I would like to see this blower put out it's full potential. I know it is in there some where.

Harvey.

[Phast SVX]

Why do I feel, if you would have only added a RRFPR you would have had the same result as I did :/

[TomsSVX]

Originally Posted by Phast SVX

Why do I feel, if you would have only added a RRFPR you would have had the same result as I did :/

While that may be true, I doubt it would have fully cured the timing issues I was having. Don't know if you read a while back when I started data logging my 1/4 mile runs, the ECU would default to 8* of advance under load. Its not what LAN put into the maps and it wasn't coming out of the knock correction. My theory is the tip-in lean conditions I was seeing coupled with the overall lean AFR's I was getting. None the less, I always wanted a standalone so I could do things like dual intakes, and map modifications for meth injection etc... A RRfpr would have only been a bandaid.

That all goes without saying, that the SVX community NEEDS a real EM solution if anyone was seriously building an engine to make more power. The Nemesis just makes it that much easier for anyone else

Tomm

[Crazy_pilot]

WOOOOOOOOOT!!!

Probably the biggest advent in the modified SVX world since the first manual swap!

I do have a question though: Is it possible for the Nemesis to store 2 different tunes? For example: 4 months of the year I'm in a larger city with easy access to 94 Octane fuel. The other 8 months I'm in a much smaller city for school, with only 91 octane. Or, say I want to drive to another city for a track event and have the car tuned for the track, but may not be able to get higher octane gas at the stations in between.

So basically I'm saying can it be quickly switched from a 94+ high power tune to a more conservative 91 tune? I would suspect that it would be as easy as saving both setups on a laptop, plugging in, and resetting to whichever you want, but just looking for confirmation.

[TomsSVX]

Originally Posted by Crazy_pilot

WOOOOOOOOOT!!!

Probably the biggest advent in the modified SVX world since the first manual swap!

I do have a question though: Is it possible for the Nemesis to store 2 different tunes? For example: 4 months of the year I'm in a larger city with easy access to 94 Octane fuel. The other 8 months I'm in a much smaller city for school, with only 91 octane. Or, say I want to drive to another city for a track event and have the car tuned for the track, but may not be able to get higher octane gas at the stations in between.

So basically I'm saying can it be quickly switched from a 94+ high power tune to a more conservative 91 tune? I would suspect that it would be as easy as saving both setups on a laptop, plugging in, and resetting to whichever you want, but just looking for confirmation.

Yes, there are auxiliary fuel and timing maps w/ different target AFR's and if you wire an input for it and program it, you can wire in a switch to switch it on the fly

Tom

[TomsSVX]

Turns out I am in luck! Atco dragway is still open till the end of this weekend. I plan to go on Sunday to try and get a few test&tune runs in to see what the Nemesis can really do for me.

Tom

[RallyBob]

Originally Posted by TomsSVX

Timing is actually pretty high under full load. 23-29*btdc at 9psi from 4500-7000 rpm yet didn't get a single hint of knock (audible or from the sensors).

This lends credence to Jack's findings with his EG33. The engine's combustion chambers are remarkably tolerant of timing advance!

[TomsSVX]

well after some heavier road tests today I was able to put it under heavy load for a longer period of time. Seems to get some slight audible at the upper RPMS so I trimmed timing a little and it has vanished. Also nothing more comming up from the knock sensors. Will know more with a couple runs down the track

Tom

[wawazat??]

Very cool Tom!

A good friend who had very modified WRX dropped the MAF when he went to an AEM system. He and the shop owner felt the MAF was a HUGE restriction and eliminating it was a major performance boost on his car.

Todd

[shotgunslade]

So can I have an "almost all the time" mode and a "pass my NJ emissions test" mode?

[TomsSVX]

Originally Posted by shotgunslade

So can I have an "almost all the time" mode and a "pass my NJ emissions test" mode?

Dan, Like I mentioned earlier... It is SOOOO easy to just plug in the stock ECU and take it through emissions. Unplug it and plug the hydra back in...

Tom

[TomsSVX]

Originally Posted by wawazat??

Very cool Tom!

A good friend who had very modified WRX dropped the MAF when he went to an AEM system. He and the shop owner felt the MAF was a HUGE restriction and eliminating it was a major performance boost on his car.

Todd

Yea, I personally believe the MAF is easier and more reliable to calculate a rough flow and air density/temperature for a naturally asperated engine.

For a forced induction engine, you really need to know what kind of air you have waiting right behind the valves and its relative temperature to get a better tune on it. Especially the stage 3 w/ its bypass valve after the MAF. There really was no way to get a good reading of how many molecules of air to expect and thus the the AFR was tossed lean. This could have easily been remedied by adding the extra fuel I had always asked for in software revisions... But still wouldn't have fixed the overall problem.

Tom

[Myxalplyx]

Originally Posted by TomsSVX

Turns out I am in luck! Atco dragway is still open till the end of this weekend. I plan to go on Sunday to try and get a few test&tune runs in to see what the Nemesis can really do for me.

Tom

Will there be anyone videotaping this with a digital cam or something else? May be a good idea to do this just to capture the moment...just in case you get some REALLY good runs in.

BTW Tom: I wanted to come out and maybe race you in good fun. Just before going to the garage and changing my tires out, I checked out the Atco Raceway site. They are still going to do the Ford vs Buick runs tomorrow. That sucks! Today would have been a perfect day to run.