Cheaps gtx3076/ewg

[kevdog]

Here is what I did for my JBR 3.5




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[Cheapspeed]

Originally Posted by Mikey do you have equipment for the boost leak test. I do if you dont. are you throwing a P2187 code?

No codes, it may be the base tune. I'm just running leaner at wot than I should be. I don't want to tune around a leak if it exists.

[Mikey]

lol if you have a leak it will pop up trust me... lol As long as you dont have a code you most likely good.

Good Job kev.

[Cheapspeed]

Car sounds like sex with the new map! Not sure what it did but the dump sounds different now that it's off spring pressure. Gonna try to get a comparison audio. Also fixed the lean condition I had afrs never got above 11's.

[Cheapspeed]

Update on what I thought was a leaky GFB TMS.
@kevdog; @Zdraveca; @Justin@Freektune; @RPM;

Unless I read go fast bit's own study incorrectly, their BPV/BOV are design to leak a certain amount of pressure.

From the results above, it can be seen that the expected leak from a GFB TMS valve represents such a tiny percentage of an engine’s total airflow that it would be impossible to for any engine performance measuring equipment (such as a dyno, boost or air/fuel ratio gauge) to detect the slightest change in boost level, torque or air/fuel ratio. When boost leaks are suspected and tested for on a car, this is usually because a loss of boost pressure or performance has been noted. Smoke testing or pressure testing the intake tract will often discover a leak from the BOV, but the size of the leak is not taken into consideration by such testing.

Link to the whole study: http://www.gfb.com.au/images/tech-ar...ter%20leak.pdf

So I'll be putting the GFBTMS back on. Though I still think it was a pretty significant leak. I've only been hitting 19psi on the stocker (not sure what I'm targeting), so I'll see if I start hitting more with the GFB.

[kevdog]

Originally Posted by Cheapspeed Update on what I thought was a leaky GFB TMS. @kevdog; @Zdraveca; @Justin@Freektune; @RPM; Unless I read go fast bit's own study incorrectly, their BPV/BOV are design to leak a certain amount of pressure. Link to the whole study: http://www.gfb.com.au/images/tech-ar...ter%20leak.pdf So I'll be putting the GFBTMS back on. Though I still think it was a pretty significant leak. I've only been hitting 19psi on the stocker (not sure what I'm targeting), so I'll see if I start hitting more with the GFB.

That was a pretty significant / fast leak though. I'll run another test on my car soon so see how much mine lets pass, if any.

[Cheapspeed]

Originally Posted by kevdog That was a pretty significant / fast leak though. I'll run another test on my car soon so see how much mine lets pass, if any.

https://www.youtube.com/watch?t=25&v=RmdhjwNuK2Q

For those that don't feel like watching the video. The boost like test we did left the recirc tube connected to the bpv. Their bpv isn't designed to feel pressure from the recirc side because these aren't normal driving conditions. While we definitely had a leak at the base of the bpv, the "leak" we saw from the trumpet, shouldn't be seen under normal driving/boost conditions.

[kevdog]

good to know

[El Beaner]

Ok so basically preasure was coming back from the recirculation tube. That's some good info.

[Cheapspeed]

Stocker definitely couldn't hold the boost. I never got it over 19psi. As soon as I swapped the gfb back on I was hitting 21-22psi.

[Cheapspeed]

Holy mass airflow g/s. Is this normal on these BT's? I figured I woudn't be flowing this much air with my setup. Feel like something might be off.

BAT's seem way more manageable than when I was on the k04 at 20psi. I was running 50*+ over ambient before and these logs were around 25* over ambient. Soaked steadily after 4 back to back runs, but much lower than before.

[NCspecV81]

Originally Posted by Cheapspeed Holy mass airflow g/s. Is this normal on these BT's? I figured I woudn't be flowing this much air with my setup. Feel like something might be off. BAT's seem way more manageable than when I was on the k04 at 20psi. I was running 50*+ over ambient before and these logs were around 25* over ambient. Soaked steadily after 4 back to back runs, but much lower than before.

Yep looks normal! I'm hitting 420-430g/s on HTA3586 @ 22psi. Looks to fall in line with mine just fine.

[Cheapspeed]

Just did some logs on my 2nd 93 revision. AFR's dropping into the 12's again. Justin is targeting 22psi now, and as I was looking over the logs, the AFR's only hit 12's when the car was making 22psi. As soon as it drops to 21psi it goes richer. This was consistent across all 4 logs.

[Zdraveca]

@Cheapspeed; did you get new map?

[Cheapspeed]

Originally Posted by Zdraveca @Cheapspeed; did you get new map?

Haha, yeah. These posts were based on the 2nd revision.

[Jackis]

From my tuning experience around here, check your couplers after and pre turbo, check your BPV o-ring...

By the way, really punky build, love it

[Jackis]

Also, don't treat me wrong, but from your logs I see your VVT could be handled better (from my point of view) and much help airflow...
I usually start to decrease VVT advance earlier than with stock K04 or similar... Thats just a matter of air already coming through a motor...
At 280-300gs it should be almost zero advance. Leaving stock VVT for GT30 causes intake cams to really be the limit for the air as it advances it too much for that amount of air.
I logged much this and that and my run-by-run comparison really showed air and vDyno increase through the run in a whole range of RPM, and the 60-120 acceleration time also improved dramatically.
So please take care of your VVT and move it to zero faster than on stock, it should really help!

[Zdraveca]

AH bratushka

[doctavus]

Noticed the Russians know the platform pretty good.

[Cheapspeed]

Originally Posted by Jackis Also, don;t treat me wrng, but from your logs I see your VVT could be treated better and much help airflow... I usually start to decrease VVT advance earlier than with stock K04 or similar... Thats just a matter of air alraeady coming through a motor... At 280-300gs it should be steady zero. I logged much this and that and my run-by-run comparison really showed air and vDyno increase through the run in a whole range or RPM, and the 60-120 acceleration time also improved dramatically. So please take care of your VVT and move it to zero faster than on stock, it should really help!

Did ya get all that @Justin@Freektune; ?

[Cheapspeed]

I'm a little drunk on strawberry beer.

Should I do logs?!!!

[Zdraveca]

Originally Posted by Cheapspeed I'm a little drunk on strawberry beer. Should I do logs?!!!

DO IT!

[kevdog]

Originally Posted by Cheapspeed I'm a little drunk on strawberry beer. Should I do logs?!!!

fuck your strawberry queer beer

[Cheapspeed]

Originally Posted by kevdog fuck your strawberry queer beer

What don't you go guzzle some IPGAY.

In other news, nice smooth lines!

But the bad news is that in two of the logs I was seeing up to 1.75* of KR. The first 2 runs were clean, the 2nd pair have KR in the upper rpms.

I'm only showing 2 runs in the vdyno so it looks cleaner, but the other 2 logs were almost exactly the same, so they were consistent.

[Zdraveca]

Originally Posted by Cheapspeed What don't you go guzzle some IPGAY. In other news, nice smooth lines! But the bad news is that in two of the logs I was seeing up to 1.75* of KR. The first 2 runs were clean, the 2nd pair have KR in the upper rpms. I'm only showing 2 runs in the vdyno so it looks cleaner, but the other 2 logs were almost exactly the same, so they were consistent.

does kr start to show around 5100rpm?

[kevdog]

Originally Posted by Cheapspeed What don't you go guzzle some IPGAY. In other news, nice smooth lines! But the bad news is that in two of the logs I was seeing up to 1.75* of KR. The first 2 runs were clean, the 2nd pair have KR in the upper rpms. I'm only showing 2 runs in the vdyno so it looks cleaner, but the other 2 logs were almost exactly the same, so they were consistent.

Don't hate on quality beer with high abv%, fucker

You're lines are damn smooth. IMO you win regardless of HP.. DAT EWG DOE!!!!!

[Cheapspeed]

Originally Posted by Zdraveca does kr start to show around 5100rpm?

Yeah, give or take.

Originally Posted by kevdog Don't hate on quality beer with high abv%, fucker You're lines are damn smooth. IMO you win regardless of HP.. DAT EWG DOE!!!!!

I pulled a fly by on a riced out 2007ish mustang GT. The girls in it hoot and hollered when I let'em catch up.

WIN.

[Jackis]

Zdraveca, ЦСКА всегда будет первым!

To the topic, I really believe your tuner Justin has much more experience than me, just because of the number of cars tuned with different mods, etc. But I spent about 2 days on dialing VVT on my car, and got the same results for my local buddy with GT3076, I should find those logs and post here later today or tomorrow. There was a plot, air/rpm, for several VVT "strategies", and I ended up with VVT being smth like that:
vvt_for_more_than_350gs_turbos.png

[Zdraveca]

@Cheapspeed; making some power at 30psi tonight

[Cheapspeed]

Originally Posted by Zdraveca @Cheapspeed; making some power at 30psi tonight

I thought I vented my block.

I was in the middle of my 2nd 4th gear log when the car shuddered and I saw a puff of dust in my rearview mirror. I never saw KR go up, and my check engine light never came on. Then I glanced at the max PSI and it hit like 30.22psi.

The second thing I thought was wastegate.

On my way home I did a careful 2nd gear pull on a back road and watched boost shoot up to 30 again. That's the picture I sent you. Vac hose blew right off. I didn't clamp it originally, like an idiot, because I wasn't able to pull it off when I put it on initially. But seems like the heat has weakened the hose so that it lost it's elasticity. I'll probably replace the hoses with something more heat resistant.

I'll load up my 1 good log in a second, but I'm not turning these in to @Justin@Freektune; until I relog back to back runs on the same road.

[Cheapspeed]

Actually fuck it, here's a 30psi log.

My logs have been a smoothing of 6 by the way.

Seeing 2* of KR at 4900rpm

[Cheapspeed]

My jaw dropped when I actually looked at the log. Mother of god I am one lucky motherfucker.

[Cheapspeed]

Sorry, I know I'm postwhoring here, but it's been a long night and I'm just floored that my car didn't blow up. The Speed gods must be looking kindly upon me this day.

Things I learned from this log.

1.) Clamp your hoses
2.) These cars can hit at least 126%IDC
3.) My intake apparently can flow 485 g/s when it's 70* out
4.) The car had KR coming out of it all of its orifices
4.) Clamp your hoses

[NCspecV81]

looks like 30psi was knocking a little. Also seems to have pegged your map sensor.

[Jackis]

Damn you were not hitting any safe 3.0 load cuts LOL?

[Cheapspeed]

Originally Posted by Jackis Damn you were not hitting any safe 3.0 load cuts LOL?

Time for a guardian angel I guess.

[Jackis]

I was just curious why you had not experienced load cut when air started to move as hell. I mean, what are the load cuts in your tune?

[Cheapspeed]

Originally Posted by Jackis I was just curious why you had not experienced load cut when air started to move as hell. I mean, what are the load cuts in your tune?

I have no idea. I'm not tuning the car and really don't know anything about tuning.

My EWG got pegged shut when the bottom port blew off, the car did begin to knock immediately and dumped a ton of fuel into the motor as soon as it went above 22psi. I felt this happen and let off immediately, but it all occurred literally in less than 1 second.

[SpeedRebirth]

Originally Posted by Cheapspeed Time for a guardian angel I guess.

GA is ALWAYS a good backup and costs way less than a new block
You don't even have to go big turbo to make good use of the GA =)

[Cheapspeed]

Originally Posted by SpeedRebirth GA is ALWAYS a good backup and costs way less than a new block You don't even have to go big turbo to make good use of the GA =)

Sucks, I just looked into it and they are sold out.

Anyway, I clamped the hoses tight so hopefully no more shenanigans like that. I'll be getting a GA ASAP.