All:So, I guess all the rumors were true about dsmtalk.com. Just a bunch of dickheads that don't like to hear anything "negative" about the DSMs and are pure anti-Vishnu bozo-heads..;)That's fine with me. I didn't enjoy going to that site anyway.. :thumbdownFrom now on, when I...

Yep. Agreed. Something like that you would want to keep.-M

Too many theories and not enough facts. Show something. Otherwise, it hasn't been done.Btw, keep in mind this is on a awd system, not a fwd. Drivetrain loss will be greater.-M

"supposed" to? What's the problem?-M

Not sure of the housing, but let's assume the TD06H. Can it be done at 22psi?How likely is it with just a SAFC? I mean if he had a stand-alone, then I might believe it. But to all 4 wheels?-M

All:A friend of mine states that he made 403WHP on the dyno (AWD) with his 1G with a 20G on race gas at 22psi. I don't believe him because he can't produce a slip. What is the likelyhood of this being even remotely possible?-M

I understand the differences with the EVO 8 engine and the DSM motors. What I wanted to evaluate though is just the numbers. Assuming the EVO 8 turbo can be installed, we still don't know the flow characteristics of it. I would assume that they are better than the EVO III's but I could be...

All:Since we don't have the flow specs of the EVO 8 with it's twin-scroll technology, can we theorize on which turbo gives more power for the street on pump gas? Which one will more than likely spool faster and give more consistant times? Why do people prefer the B16g over the 20g...

I'm glad you can show off your new ride dude. :)It'll be the cleanest 1G around the Bay..hehehe;)-M

You just best take care of the Phoenyx!!;)Let me know how the car goes dude. I'm very happy for you!-M

;)Thanks guys! OMG, I can't believe how a short-shifter kit feels!! I can never go back to the standard shifter.-M

Aight guys, here they are!I'll take some more soon with me.http://share.shutterfly.com/osi.jsp?i=EeCNmrVi5ZNGEnCheers,-M

Silver.-M

Hello Peeps!It's been a long while since I've been in the car scene. I've been working a lot and have been keeping to myself. Well, I've just moved to the LA area, and I really wanted to buy my first brand new car. Naturally, it would be the EVO, so I went for it.I've sold my clean...

How the heck are you running a T3/T4 on stock fuel system? You are just asking for trouble! That's why your car is losing HP significantly at the upper rpms. Your ECU is pulling timing. You should be in the 10s for good power outside (which will inherently raise your a/f ratio). You are...

All:Ok, I mentioned this to a fello DSM mechanic and here's what he had to say.There is a knock inherent to all DSM motors and the Starion motors which happens at this rpm range at low throttle (17%-20%). The DSM motor was designed to counteract this imbalance with balance shafts. They...

Bump

Normal. Boost will spike and then settle down.Although you shouldn't be getting only 8psi or 9psi.-M

Ok, I'm baffled by this one.In normal driving, I have noticed that in the 2500-3000rpm range, I get knock when I'm about 17% throttle (about -8 vaccum on the boost gauge). I suspect it is something fishy going on with the fuel or some electronics or something. No matter what I do to the...

Actually, I would NOT start with the ITC yet. It is too delicate an instrument to mess up your engine.Start with the pocketlogger and set your boost where you want it. Tune to get rid of knock with AFC only(you'll notice this with timing being pulled at the upper rpms instead of being...

Don't try to lean the car out because the dyno reads pig rich. I guarantee you that you'll lean out when you get it on the road.Keep it where it is...good run!-M

A pocketlogger will do him good at this point however, he will only be able to "observe" his timing. Sure, if it's reading low, then he's more likely knocking. However, he could get away with adding (or subtracting) more fuel across the whole rpm range and see when and where his EGTs are...

Why on earth would you try to drill a hole in the manifold while the car is on?????:confused:You'd better hope the bits didn't go through the compressor blades (probably torn) and small fragments when into the engine...:cry:-M

Hehehe.. well, guess what? I get those readings and I ignore them. If I'm not knocking and timing is high, I'm happy. On a hot day, that O2 reading will go up. If it's colder, well, then you'll have to add more fuel....There have been times that I've increased fuel significantly and saw...

Jon, you should also state that this reading is a guideline for the 2Gs not the 1Gs (which can be 0.84 and be fine on a cold night).Rule of thumb: Tune by timing and knock. Not the O2 readings.-M

Yea. What he said.:thumb:-M

True, but his timing is terrible in the mid-range (4k-5k). You must be knocking at that range. Try turning the boost to stock and see what your readings are.It will be hard for you to tweak at certain rpms without a SAFC.-M

Yep, you'll need a Palm.Go here: http://www.pocketlogger.comRead the FAQ.-M

Not when its being fooled by a piggyback.;) Since this is the case, you'll have to go by timing or knock instead of any other readings.Hmm...then you will have to go by timing. Lean it out some more till you get about 15-17 timing at the upper rpms. This would be ideal. Richening it is...

Density is equal to air mass. And the ECU does calculate this air mass some kind of way. It's displayed in the datalogger.Only thing I can think of is that MAS (or O2) isn't doing something right. What is your knock sum? At what rpm?-M

Exactly. As this proves my assumptions - even on consecutive runs, you are getting different O2 values.Sure the O2 will change from temperature to temperature outside. The mass of air changes so you will get more lean in colder whether and the O2 will show this. That's why it is best to...

Well over here in the Bay Area, there are at least 30 degree swings. All I'm saying is that you shouldn't base one running lean strictly on the O2 voltage. At night, it will read lower voltage (in the .80s+), but doesn't mean you're actually running lean.To run lean, you will get knock...

You can't go by the O2 voltage reading... it changes with the temperature outside and therefore is bogus since it can read low and have no knock. I"ve seen this on my pocketlogger.-M

The ECU will only pull timing when it senses knock significant knock. How much and what it determines as 'significant' is anyone's guess.-M

Just to add a few more cents to this thread.Concerning Standalones:The biggest drawback I had with my Haltech EMS for my RX7 was the fact that it didn't monitor knock and was able to retard timing on its own. I made several fatal mistakes: 1) by getting the car tuned at a dyno facility...

1) The logger will display a maximum of 1606Hz. Your MAF will give signals much higher than this.2) Seems like the car is getting a crapload of air with DC 95%+. That UICP and ported turbo is doing it.Get some bigger injectors and a pump with a SAFC.-M

I think that the coolant temp sensor bad will definitely affect your ECU in how it selects fuel and timing. Coolant temp, I would imagine, is a factored variable for computing that stuff.I say get that coolant sensor fixed, then re-log.-M

O2 readings are bogus since they vary based on the temperatures outside (they'll read high on hot days and low on cool nights). Since you can't read knock, it will take awhile to find out if you are indeed encountering knock and timing is being pulled because of it.But yes, I've heard that...

Not true. The pocketlogger doesn't display past 1606Hz, but the ECU is totally capable of reading beyond that (and the MAF will give a higher signal too). And no, the ECU will not pull timing based on the airflow going beyond 1606Hz. You are running lean somewhere and getting knock would be...

Yeap, you are both right. Sorry for the misunderstanding. As it turns out (once I got the datalogger), I was running lean afterall. We are still trying to figure out why Vishnu had such lean settings on the SAFC-II.Thanks for the suggestions..-M

Brad,I appreciate all your help in this. I hope I am not coming off as a troll.:( My exhaust system is solid. All the pipes are welded together so...I probably will contact them later about it, but I'm satisfied with my own tuning right now. The car feels good at high rpms and high...

This is not the way I understand it nor is it in practice.My fuel trims were:Hi - 110% Mid - 100% Low - 110%My SAFC-II settings were:2000: 0% 3000: -6% 4000: -8% 5000: -18% 6000: -8% 7000: 0%This caused my car to knock like hell and my EGTs would peg at...

Hmm.. I'm not sure what you are saying.. A fuel trim reading of 100% means that the ECU doesn't have to adjust for any fuel increase or decrease and you have a fairly good mixture. If you are below 100%, the ECU has had to lean out the mixture to keep things in line. If you are above 100%...

Or rise. Enrichening will raise the fuel trims and leaning will lower the fuel trims.-M

I can tell you exactly what happened. There was no race gas put in my car. I was there and watched them.They didnt' allow any cooldowns between runs. They just kept running the car and adjusting the fuel. It is possible that there was a boost leak somewhere, but the boost graph looks...

yes, fuel trims mean the ECU is adding fuel. But that's correct if you are using a SAFC to richen up the fuel.-M

Yea, that was a little dumb.My suggestion would be to enrichen the fuel till you eliminate knock at the rpm that is knocking. Look at the O2 readings when the knock is gone to see how much you enrichened the fuel. My fuel trims are as follows:Hi-118% Mid-103% Low-118%Very rich to...

You are correct! But you aren't really stating a solution to the misalignment of the SAFC. The basic facts are:1) The SAFC *was* indeed tuned too low. Not a single person with the same mods I have should be putting negative percent in the upper rpms unless they have bigger injectors...

I was in the same exact situation.Here's the problem: You are running lean. If he tuned it to 12.0:1 at the dyno session, you can bet that your logger is putting out O2s that are indicative of a lean condition. I bet they aren't .92-.94 in range.Solution: tune the car with the...