I just found this thread today with my quotes all over it.:sneaky:The passage you quoted me on was written 7 years ago, when I was first understanding the operation of the MAFT. Even Dave (ECMlink Co-Creator) didn't even understand why the GMAF had it's own temperature sensor built into it...

Sorry I didn't reply sooner, but since you are still active on this thread I replied. The box was self-made so it's not like you would be able to find it any where. I sold that GST over 7 years ago.

Here is a pic below of my old 2G's trunk. Two 10" woofers with a custom fiberglass box. It was easily detachable for track nights, especially since it weighed over 60lbs.

Why post a statement like that. You will only create an unproductive argument with remarks like that, especially when you are the one who is wrong.When you disconnect the battery from a 1G, you do not lose the saved settings in DSMlink, but you do reset the long term fuel trim values. All of...

At this moment the fuel pumps are the limiting factor. I saw the log on the DSMlink forums and I noticed that the 1600's are only at 71% IDC. This shows me that you are not fully maximizing your fuel system.Lower base fuel pressure. This will allow the pumps to not work as hard and overall...

Right now most of the country is in transition from E85 to E78, and there are some parts that already have switched to E70. The changes to the tune are not as important now, as they are in the Summertime. At the worst in the Winter, the ECU will force negative fuel trims and run rich at full...

Everything on my website is "Step by Step." If you have any questions while you are tuning just post them as you go.As for your BoostEst problems, your intake temps are in 115F range which will decrease the BoostEst value by a little. But that is not enough to drop it below 10 PSI though. You...

Idle logs will not show any valuable information about LTFT mid fuel trims. I want to see a log where you are at 75Hz-150Hz MAFraw. But then again, I really don't need to see it, since I know after a few days of driving on the highway that LTFT mid will eventually level out close to zero...

Why did you raise the 50Hz slider all the way up to +19%? I told you to go to +12% and LTFT lo would have been perfect. LTFT mid will level out close to 0%, if you followed step #2 on my post. Bring that 150Hz slider back down to +11% and your fuel trims will be perfect after a day full of...

Just put a wrench on the cam itself to keep it from moving.

This does not look like a fueling issue, but more like a base timing issue. You are heavily negative on the airflow sliders which would lead me to believe that you have a boost leak after the GMAF. Was boost set at 26 PSI on this log? I believe the fuel pump would have no problem providing the...

If you are positive that base timing is set at 5 degrees BTDC, then I would make the follow adjustments to the timing sliders.5500 RPM = -1 degree from where it is right now 6000 RPM = -3 6500 RPM = -5 7000 RPM = -5 7500 RPM = -5 8000 RPM = -5Then be done with it.

You didn't make any of the changes I suggested in the last post. The airflow sliders are still unchanged. WTF Your fuel trims are still just about maxed out positive.You need to verify base timing. Please post what you have timing currently set at. Coolant temps are a little high but not to...

Mechanical timing could still be correct. The negative timing you are seeing is from the Antilag activation just when he pushes in the clutch on the next shift.The knock you are seeing in that 3rd gear pull log is probably from the fact that you left off the throttle while still in Antilag...

The technique on this page will adjust any MAF whether it be a 1G,2G MAF, or GMAF. It is a simple step by step procedure that you follow. http://www.jeffgst.com/gmafcalibration2.html Pay no attention to the NAME on the address page. It's just an address.1) Add MAFraw to your captured values 2)...

I posted a few of my old drag videos.

Your O2 is working fine. Just the fact that the trims are changing is proof enough that it is operational. A Front O2 that is on the way out, will show a voltage flatline and have the fuel trims locked at 0 or 100%.If your Lo fuel trim was at 121%, it means that the ECU is trying to increase...

The reason is that the stock 1G timing map targets 22 degrees of advance at 6000 RPM. It then rapidly drops after that to 17 degrees as you get closer to redline. I really don't know what Mitsubishi engineers were thinking when they designed that timing map.As you get closer to redline, you...

1G Timing Table = Designed for 7.8 to 1 compression 2G Timing Table = Designed for 8.5 to 1 compressionI would not "start" with 1G timing just because you are using E85. I would use what timing you currently have and add advance slowly. Even with my 1G on E85, I retard the timing at the...

I should not have grouped E85 and C16 together.E85 does burn faster than gasoline or leaded gasoline, but it is the cooling effect in the intake charge and the lower heat of combustion that allows you to advance timing further to achieve higher efficiencies. The fact that E85 requires more...

15 degrees BTDC on 91 octane is not the same as 15 degrees BTDC on 100 octane is not the same as 15 degrees BTDC on E85 is not the same as 15 degrees BTDC on C16Guess which one of the above will make the most power??Answer =...

That is what my sunroof looked like when the center pin on the lever fell out of place. At high speeds it would open up even more.All I did was push the center pin back into place and it closed properly again.

I am bringing this thread back because I see some of my data here, and so that I can explain why there are differences in your timing data and mine.The reason is because of something called a "Propagation Delay Adjustment" in your timing data. In the 1G ECU's, there is a time delay from when...

Easy Fix = Get rid of the COPIt is a performance downgrade from stock, and you will have nothing but problems unless you have an engine management system with the ability to change dwell times.

The 93, 94 Talon's are the 1G 7-bolt motor from the factory. From the top of my head, if your 92 DSM is built after May 1992, then you also have a 1G 7-bolt motor.6-bolt only came from the 1989 - April 1992 DSM's.

Good question and a difficult answer.The ECU only can guess at what actual boost is since it uses a MAF instead of speed density MAP sensor. If the MAF is not calibrated correctly, the ECU is receiving an incorrect airflow value.So the answer is : BoostEstThis is why it is so...

Do you have any specific questions??Just find a dry night to race at the track. Pre-load the tranny before letting the clutch grab and hope everything holds up. Your weight reduction will increase the reliability of every drivetrain component in the car.

LTFT's should be around +-2% and the STFT's should not be maxed out in any direction.The 13.1 at cruise is what is causing your poor gas mileage. Your AFR's should always be stoich as long as you are not at WOT.

If you are getting 12 MPG in your DSM, you have a fuel trim problem or a very heavy right foot. I get 18 MPG in my Talon and it runs on Ethanol with Dual -8 lines and Dual Bosch 044 pumps.A maxed out negative LTFT and STFT trims will identify the closed loop problem. Or it just may be that...

I personally have never seen the stock keepers ever fail in the valve cover before. I don't see why you would need to be paranoid about something like that. There are a thousand other (more likely) ways your DSM can leave you on the side of the road than that.As for the baffles, I would leave...

Since you were on RRE's website, did you see the no brand name flywheel that they have for sale? It's not as light as aluminum flywheels, but much stronger and it can take more abuse. I have used Fidanza flywheels before and they are extremely light and rev happy. The problem is that they are...

Your AWD will only perform as well as your tires can.You could have 16-wheel drive, but if you hit some black ice, only Sir Issac Newton will be in control. We had 8 inches of snow in Vegas last night, and it took me 10 minutes to get up my driveway. It was 30 degrees so it was warm enough to...

SimpleYou could be 2 quarts low on oil and still have proper oil pressure at idle conditions, and even 4000+ RPM highway conditions. The oil pan is baffled/sumped and the oil pump pickup is located at the lowest point of the pan, where all the oil accumulates as it falls. As long as there is...

The plug is located on the bottom-rear of the tank on the driver side. The size of the bolt is much larger than a 19mm though. From my memory I thought it was a 23mm or similar. If you never removed it before, it is covered with a thin undercoating. Almost like a black stucco wall coating.THIS...

Did Buschur really say that?Yes and NoA cast manifold and an EQUAL LENGTH tubular manifold in theory should be able to achieve the same peak HP, with all other things being equal.BUT, cast manifold and an EQUAL LENGTH tubular manifold DO NOT have the same HP curve. An equal length tubular...

Lucky for you, Felpro designs their composite HG with an oversized bore.Just purchase the Felpro Composite for the 4G63 and it is ready for a 87mm bore.

I think you are misunderstanding me.Base Timing = Base Ignition Timing (5 degrees before top dead center)When you say "base timing was off 1 tooth" that is telling me that you are talking about cam timing. You need to ground timing and take a timing light to the lower timing belt cover...

OEM Composite = Standard OEM HG. Soft material, metal fire ring OEM MLS = Mitsubishi Multi layered METAL HG. Basically indestructable.I use a Felpro Composite, standard ARP's and a O-ringed head in my Talon. This combo is good for 65lbs/min worth of airflow and 136MPH through the traps...

If your car went to 10:1 during idle, then the ECU is going into open loop. One of the reason for this is that your ECU is giving up on trying to maintain 14.7 to 1 because the fuel trims are so far off. Another reason could be that you may have been overheating the motor. There are a hundred...

Boost Leak after the MAF. It could be any pipe connection, vacuum leak, brake booster line, intake manifold gasket...etc.As for the knock, it looks real to me. First things first...1) Check base timing. Make sure it is set correctly at 5 degrees BTDC 2) Calibrate the MAF once you fix...

No where in this thread did I see what the Base Timing setting is?When they adjusted the cam gears, did they check Base Timing?Post a new log?

Don't ever let someone else tune your car. It is way too easy to do it yourself, especially if you use my website. This is the only way you will be able to understand how the DSMlink system works. You need to learn it for yourself. If you really want some one on one help, then you can PM for...

Fastest reaction? Do you really think it takes that long to fill a vacuum line with pressure?No way. If your boost pressure spikes to 25 and then drops back down to 20, then that is a very inefficient wastegate that has nothing to do with the length of the line. I can set my T67 as low as my...

The Bosch 044 will easily outperform the Aeromotive pumps, IN DSM APPLICATIONS.At lower fuel pressures the Aeromotive will outflow the Bosch pump by quite a bit. But decently high HP DSM's do not flow at low fuel pressure. If boost pressure were to be around 30 PSI, I would expect fuel...

You will be fine with a stock 1G cylinder head and some decent cams.The attention should be centered on the fuel system and drivetrain to hold up to 500-550WHP abuse. My question to you is why you picked the AEM EMS for your engine management if your goal is only 550 WHP. DSMlink is a much...

It really doesn't go stale like gasoline does. The problem with E85 is that the Ethanol loves to attract condensation. I've stored E85 for as much as 3 months and it showed no real loss in its anti knock properties.

89 Octane will not destroy a 4G63 motor. It takes a ton more than that to kill it, although the above posters are correct by saying that the car will knock more. Luckily the ECU is there to compensate for that lower octane, and it will automatically retard timing when the knock sensor picks up...

On the top of the fuel tank, there is a air siphon line that connects to the fuel filler area.You will notice 2 holes once you open up the gas tank cap. There is one large opening where you place the filler nozzle and another small hole next to it. That small hole is the siphon that allows...

You are pressure testing the intake, not the exhaust. :rolleyes:But you are correct when you say that some of the boost will leak out the exhaust valves and into the exhaust manifold. But that amount of pressure is insignificant and you should still be perfectly able to pressure test your pipes.

It not really a "click" but just the way you word your Title of the post and the description of the problem.Keeping it short and sweet with specific questions will get you the best responses. Also if there is a specific problem, then post a SINGLE log of the problem with the logged clipped...