yepper, kinda expected that with the bigger turbo.

I'm at a loss, I am still running a stock 94 head but I figured the big turbo would be enough to blow it through anyway, maybe not 400hp but I was really hoping for 350.

 

He did Sav. The bottom chart in post # 14. You have to divide the numbers by 4 (the link works in .25 increments).

100kPa @ 4500 rpm = 116 points
116 points / 4 points per degree = 29 degrees
So 29 degrees advance at 100kPa & 4500 rpm

 

6.25 gph that is alot of water? that is more than i spray in a standalone setting. Ok after using bens post of knowledge to descipher the link data your timming is pretty decent.
So you could be blowing out spark, loosing boost from a weak wastgate. The way your torque falls off leads me to believe it is not staying fully closed. Your knock sensor might be a tad sensitive as well. +1 to get a detonation monitoring system that depends on your own ears, with this you can verify if what is causing a retard event is knock or maybe a alternator getting loose, lifter tap etc.

 

Thanks, Ben. I've never played with Link software.

18 degrees at 180kpa, 12 degrees at 220kpa, on a 3071R with water? Something is fucked in your timing. Check your belt and make sure you didn't botch the base timing or the marks.

 

omg save you are right his midrange could use a bump. All these other ecus have such weird interfaces.

 

i emailed ken a long time ago to tune mine but he wouldn't touch megasquirt

 

As it stands, sounds like he was doing you a favor.

 

Exhaust is a straight pipe 2.5 with only a small rez towards the end of the pipe.

Not sure the type of Dynojet, in-ground, expensive looking, did have a brake.

Manifold is the FM cast unit, DP is the current gen FM cast unit as well.

I don't know that Ken is the issue, something just doesn't seem right. I tripple checked the timing belt and confirmed TDC between number 1 and the crank pulley. Like I say, I'm at a loss.

 

You confirm 19 teeth between the cam marks? I had problems with low timing and crappy spool, turned out my intake cam was retarded 2 teeth.

Although honestly, with that timing map, '94 head, 2.5" exhaust, and a .64 A/R 3071R, I don't know that you're that far off. You need the .86, '99 head, 3" exhaust and a good timing map and I bet you'd see a 50whp bump.

 

When I was bugging Corkey Bell about exhaust. He told me round about, 2 1/2 is good for 250hp , 3" good for over 300HP.

That may not matter so much with no cat though.

I would give him or FM a shout out tommorrow.

 

I'd try a better standalone and the 3".

FM is getting *average* 35whp gain going from Link to Hydra. Skip Cannon's car picked up 50 whp. I'd bet yours would also pick up more than average.

 

Is there something inherently bad about the link ecu? Thats quite a power change just from one stand alone to another.

 

Resolution. How often it reads data and responds by making corrections, etc. and how detailed it's readings are.

 

i don't know a lot about the link but the little experience i had with it's handheld controller sucked something fierce

 

Bigger is always better. Whether you make 150hp or 350hp 3" makes more power and does it sooner.

So what do Hydra/MS do that Link doesn't? The same tune should should produce the same numbers right? If they're both tuned to 11.5AFR with the same spark table, hp should be identical. Resolution helps driveability/part throttle fine tuning, not necessarily peak numbers. I could see 50hp from a SAFC fuel tune only to a standalone fuel/timing tune, but 50hp from equally tuned standalones? seriously?

 

Stil, 250rwhp on a 3071 with 2.5" is pathetic. Either you're flooding your cylinders with water instead of fuel, or something else is fucked up.

 

Word. Here's a question for the group, should it have been tuned completely without meth/water first and then add the juice and tune appropriately? The one thing that stands out to me is the very low fuel values. Those injectors were working at like 45%!

 

What's sad is the dyno looks fantastic for a turbo that size on a 1.8L up until 4.5K

 

I'm starting to see a trend here.


That's the way I would have done it but I'm a WI noob so...

 

did your wideband agree with the dynos?