there dyno is inside but pretty sure chad opens the bay doors when tuning.

istn every shops dyno techically "inside" a building?

 

Inside a warehouse, not inside an air conditioned lobby.

 

yea there shop is nice but not that nice....
guess you havnt been to the shop...

 

They double checked during the removal...everything was ok.

 

 

Hmmm if I got on the gas at 2500 with the stock turbo and built 5 psi and then let off the gas partially instead of fully I would get the Choo choo chooo sound of the blow off valve.

With the new GT30 turbo it does this at or below 3500 in 5th gear on the highway so I will have to re-learn my driving style if this is going to happen at light throttle. I'm not sure if I can tune around it but it's kinda of annoying. Perhaps if I get the engine to flow more at light throttle it will accept more of that surged boost. I am running some semi aggressive exhaust retard and intake advancement on the MIVEC tables which could attempt to be spooling the car too much at light throttle. I'll try stock maps and report back although the WOT performance is my main concern at the moment.

Looking at the Garrett design of the anti-surge shroud it looks different from all the regular GT30's I've seen where the inlet is 4" and the slots loop around to the main airflow. On this Bolt on GT30 it loops around into another slot that leads to the 3" flow path which is almost the same size of the compressor inlet. It might not matter but it is a different design.

 

the shop runs when the dyno wont be used, which is rare....

its normally 10 degrees cooler on the dyno than outside...

(as per our discussion earlier over IM)

i just did a retune onthe 3076R with a 3 port solenoid... spool was close to thehallman pro rx, but with less taper... 3 port rocks on this thing (thanks to help from Jon @ HB speed and bryan at GST for the setup).... it was quick and easy... first pull 22 psi, second 24, then 26-27psi...

the turbo is laggy.... i have no surge issues... but im not overly impressed with the power....

358/290 at 27psi (the car stock was 230/240).....

cheers

cb

 

Wow..... in a negative way, is it possible to see a dyno graph? And when you say stock; meaning no tune and no parts...? If so then double wow on gaining only 50lbs Tq

 

I would be interested in Dyno plots as well since I think it's time to figure this turbo out!

Ok Longish post but bear with me, any suggestions are welcome.

I messed with the MBC a bit and reduced the bleed hole size and increased the signal hose to full. Now boost hits with barely a 1 psi spike and tapers maybe 1 psi from 4k to 7k which seems stable and predictable.

I started turning up the boost after work today, still 85F and above average warmth. I ran a 3rd gear pull and it looked clean with no knock and airflow numbers in the 750 G/s range at the top end. I had a few gear pulls in 4th and 5th on the highway at 24 psi and the car was literally "flying". Sadly the stupid logger crapped out just before and I didn't get a capture but there was no activity on the TurboXS Knocklite either which is set to activate with moderate or worse knock (4+ counts or so).

I inched up the boost which ended up being 25 psi and got EvoScan working again. This time there is just too much traffic to get on it so I was forced to do a partial 4th gear pull and it seemed to break up as I was accelerating. Not sure if it was boost cut but full throttle at 3500 to 5000 didn't seem to trigger it, if I stayed in it the thing would hesitate at 5500+.

I switched to my lower boost setting of 22 psi on the fly and it pulled fine to redline. Logs showed strong airflow for that boost level and zero knock. I'm going to back it down to 24 psi on my high setting and bump it to 23 psi on my low setting and get some solid datalogs. Tactrix 2.0 drivers locking up on me isn't really helping matters much though.

Boost Limits:
3000-6000 = 300
6500 = 295
7000 = 290

I doubt I was exceeding those limits, so what else would cause that hestitation with zero knock? My Airflow check and Torque limiter tables are higher than stock but since the stock turbo faded so much at 5500+ compared to this GT30 they may still be too low.

My AFR's previous to the turbo were around 11.0 to 11.3 range but I still need to verify what it is doing now. I'm not installing my wideband until tomorrow night, my body just hasn't recovered enough. Then tomorrow I'll inch up both 1 psi and try and figure out what is up. I'll also do a boost leak test at STM if I can get over there since the upper IC pipe seems a bit hotter than what I remember it being... If there is even a small leak that would explain a great many things.

 

Those logged g/s above and in a previous post of yours in this thread are totally incorrect. What are you using to log them? The stock Evo 10 turbo at full song (about 19-20psi up top) logs about 40 lb/min which is 305 g/s. The 3076 at around 23psi I was logging about 47 lb/min which is 355 g/s.

IMHO, you should be logging knock with Evoscan.

 

Hiboost, what kinda injectors are you running and what are you logging the airflow with? The airflow numbers are way off, the most I've seen on a stock turbo was around 315g/s.

 

Maybe Hiboost meant to type 450g/s? Slip from the 4 to 7 on the keypad. I think that would be about 58 lbs/min which is about the absolute max the 76mm wheel will do.

GST, was the 3076 the Evo X turbo? If so, got a dyno chart and whos car? 47lbs/min is pretty healthy especially for 23psi.

 

Spark blowing out? Or possibly too rich?

 

Yup Evo X 3076. It made less power than the stock turbo.

 

So its becoming more apparent now that tuner shops are FINALLY commenting...... looks like the Garret turbo for the X has completely flopped...

HiBoost hopefully u will see different results, but now that GST and CBRD are commenting its looking like you shouldnt be expecting much