Thread: VE-T blogger, dynos, movies, and pics.

I dont feel the JWT ECU is a problem what so ever. Yes you can get a tunable ECU and it will work better but running 22 PSI on pump gas is not smart at all. Then when things go wrong instead of blaming yourself for pushing the limit lets blame the JWT ECU.

I am 100% sure at 18 PSI that JWT ECU was not having any detonation problems. I still think my guideline is a safe way to look at boost on a SR20. Again it is a guide line and not written in stone.

At some point things go south. The old saying the straw the boke the camels back. Lets say I can bench press 200 pounds I might not be able to bench press 201 pounds. There is a limit and when you go over things go bad very quick.

My firends turbo VE is making 513 WHP on a JWT ECU and has been running fine for the last 6 months or so. He runs 93 octane to 17 psi and runs 103 octane to 25 PSI when he goes out racing.

It is so much easier to keep things safe than to push the limit and pay out your nose to rebuild.

Yeah i may of come across a bit negative. I was moreso implying if you want to be on the cliff edge of a motor/setup then you need to be monitering the motor very very closely with a mick hair fine tune, and if you were keeping the Jwt ecu the simple solution is to turn the boost down.

I agree with you andreas, this tune is very safe and has proven to be reliable. I do push this motor quite a bit. Some would say I am an idiot for doing so, but there is only one way to find the limit. Hit it, then back it off a bit.

Another thing you guys must realize is this.





















This is Utah. I am at 4500+ elevation. A 500whp car here is making a lot less power. I made 442whp, with a 18% correction for elevation, temp, and humidity. That means that uncorrected I only made 375whp. That is a lot less air than at sea level! 15psi at sea level is like 20psi here. It is a huge difference!

I pushed the limits, and now I found them. I will not be hitting them again. I want to be able to make 450ish on pump gas and less than 20psi of boost when I put the new manifold on. I don't see why this is not possible. But at least I didn't blow it up right? The car runs great, pulls great, and the clutch cannot keep up

Interesting......



Im glad it still hauls, but hauling in your little world doesn't mean something is not wrong with the motor!



These turbos do have limits my friend, push more boost all you want and add the piss outa your initial power hit. Your top end won't gain piss when your outside the efficiency range of a turbo.
Im not saying your particularly to this point, just stating what happens.



So just curious, you really trust your boost gauge that much? I have been in this business long enough to not trust my engine to a boost gauge....And what octane are you runnin???? And how are you monitoring knock??????



Why in gods green earth are you going to drop that kind of cash for a TS t3 mani? I think this subject has been kicked to death, but my goodness you will not gain that much spool!!!!! turn knob for .5 lbs more boost, problem solved. But hey you run 24 psi on 91 mixed with 100+ so no problem!....oh boy.
And second why are you going to drop that money in the first place, please go by a better tuning solution first.... Calum, AEM, ect.....



And the numbers different again......



Why do I feel like this is a big guessing game with you and the dyno..... Please a get something you can tune....



No flywheels don't add power, they just like to help your engine realize full potential...... Why have you not got a clutch that doesn't slip also????? Was it not slipping since your first dyno graph post?



Your power is back??? Where did it go before? I still feel this is a big guessing game.....



Are we still guessing, or is the seat of our pants the new standard....?



Hey we have a winner!!!!!!! You admitted to the guessing theory!!! That truly you have no idea what is detonating or not. You never heard any though, hmmmmmm, how was this done? Do you have a knock counter? Are you datalogging your rediculous street pulls at 24psi while watching your crazy accurate boost gauge???? Wait and again...I guess 22psi is the limit....Excellent And i have no idea how you came about this resolution.
Was this 2 gallons of mixed fuel with piss 91, or 3, 4, 5, ect....????
And you now propose 19 should be safe, but we don't know for sure.



This man is smart, and is also giving sound advice!



hmmmmmmmmmmm, lets just blame good ole JWT



Also a smart man! And giving sound advice



I will 100% agree and suscribe to this theory, unless Coheed you are made of money. And im not trying to be an a s s with this comment. Im assuming your not since your clutch is burning and you can't afford slicks. So quit guessing with your motor!!!!



Seriously??? Well yeah at least you did not blow it up, but i could forsee that in your future. Since these so- called limits were pretty much a toss up in my mind. Your clutch still sucks. You want 450 under 20lbs, yet you only hit 442 once..... at 24lbs. Please correct me if im wrong on that, with more dyno charts. And you are still using a JWT ecu, fantastic.

My reason for this ranting? Well from a tuning aspect, this whole thing seems just not good. Couple dyno days and you hit the streets burning it up (Well 13's and trapping 114 is not burning it up in my mind, but if it makes you smile who am i to stop you) on 24 lbs. Hey but you mentioned you didnt think any knock was there, sounds solid to me. Its your money and your motor so do with it as you like. I just have been having a hard time following this thread and seemingly no one really questions what your doing. So call me a dick if you like, but if we were tuning that car, it would leave rock solid with no guessing and then its your prerogative to do with as you please once you leave the tuning table.

agreed

boost doesn't kill motors damn it, i see all the time on these yank based forums where people run mail order tunes all the time and they say 18psi. 20psi or what ever is the safe limit for street fuel.

These statements are just plane wrong

now we have 98 ron here (comparable to your 93?) and we push 30psi on a street fuel. Difference is that we pretty much only run fully programmable ecu's whether it be a remap, power fc, full standalone whatever. You can run as much boost as you bloody well feel like as long as you head isnt lifting with normal fuel as long as the timing and a/f is suited!

You will make more power on race gas as you can advance the timing in certain spots, but as long as both are tuned correctly they will be just as safe as each other with one making less power!

Fricken mail order tunes suck ass!!!!! when will people get this! each car is different and needs its own fricken tune!!!!

with a proper tune you will have earlier spool and be safer

Nice view, If I didn't hate snow so much and the cold I could live out there lol. Get a camera pod it will help when your alone and shooting vids.

I hope I answered all of your questions, but please, do not post unless you have constructive comments or suggestions. I am open to all of your suggestions, and I don't mean to come off overly defensive, but some people here have no concept of how elevation affects a motor. There are guys up here tuning on 91 octane on evos running upwards of 24psi without issue. Stock evo X runs 23psi. This just goes to show that every motor is different, and very few people have pushed the VE. When I drive to sea level I will make sure to turn the boost down. Thanks.

There are some marks on the ground strap from me prying on it with pliers, and I rubbed the rust color off the strap so it is a different color. You can see the insulator that has cracked and been taken out. It's my fault, the spark plug was defective when I put it in. The center electrode iridium piece was in the box when I opened it, it was broken off. I just threw it in anyway after closing the gap a bit. Perhaps the insulator was already cracked when I put it in? My fault. I'm still not going to run that much boost until I get a better way of monitoring knock. Enjoy the pics.

What is wrong with me questioning your methods? K So we have tuned stock EVO's here in MN on stock turbo's that push 23....and your point being that every motor is different? This I am well aware of, since time and time, car after car, same exact same mods put down 20 whp difference. Why is this? i really have no good explanation. Every motor from the factory line is different. Period. We have tuned 100+ mustangs, 100+ evo's, and we have seen literally identical set-ups with same EMS and different whp. I know every motor is different. Why am I making this point? Becuase why will one car knock at 21lbs, and another won't? One can push 23lbs (on the same gas) and not knock.....every motor is different. Trust me I get it.
Secondly you said stock EVO..... So try putting your 3071R on there and push 23lbs....probably not going to happen. Your comparing apples and oranges here. Obviously a larger turbo at that boost will cause the motor to react differently.
All I was doing was compiling your posts and questioning your method of monitoring what is happening inside your engine. I was not trying to be a dick at all. I am sorry if I came across that way. But you have obviously made quite an investment in your car and Im sure you would like to enjoy it for more than just one summer.
So as I stated before do with it as you please.....but As far as my main suggestion, get a different tuning method/ system if you want to see the full potential of what is under that bonnet.

A gt3076r is what I am using, and there is a lot less heat generated by a gt30 turbo when compared to a t28 sized turbo. It moves more air, but that doesn't mean anything. An engine will detonate at peak torque. A 300lb ft of torque engine running at 8k will have less chance of detonating than a 400lb ft of torque engine running at 6k. Higher revs, and the chance of detonation goes down. I am not revving that high, but I am also not doing that much torque. I think my max torque even on 24psi was around 350. Horsepower doesn't cause detonation. Neither does boost, or airflow. So you can't really say that I am detonating on 20psi on pump gas based on the boost I am running. Or the turbo. Or the gas.

My old SE ran a disco potato on it at 18psi daily for years. The guy I sold it too ran 87 octane in it with bkr6e plugs. That was a stock bluebird! There is a big dyno meet tonight. I am going to show up and do some pulls on 20psi to see if I can read any detonation on the plugs.