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Old 09-03-2016, 01:50 PM   #1
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Default 1.8 EWG gt2560

**The reason for the lack of torque before 4k is that im running straight spring pressure on the wg. the wg opens gradually which kills spool but this setup is the only way i can get it to not spike when up shifting in higher gears. **


datalog from this dyno run
3000rpm 8psi
3400 10psi
3800 11psi
4500 12psi
5000-7200 13psi






stock bp4w @43k miles
fab9 manifold
tial 38mm wg vta
gt2560 @12-13psi (this is absolute pressure on the ecu. Gauge pressure is more like 13-14psi)
3 inch exhaust from turbo to tip. no cat
flyin miata IC
hydra nemesis
base FM timing map
93 octane

Y I NO MAKE TORQUES????
i believe the power number because of the 3 inch exhaust and the amount of boost. Ive had 2 different boost gauges in the car that both read 1-2 psi "higher" than the ecu. Pretty sure 12 psi absolute is less than gauge pressure. Im upset that i cant turn the power up any more. the car doesnt feel crazy fast now

this is the timing map



Last edited by LownSlow616; 09-03-2016 at 07:36 PM.
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Old 09-03-2016, 02:38 PM   #2
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Check base timing and then add timing!
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Old 09-03-2016, 02:41 PM   #3
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y
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Old 09-03-2016, 02:43 PM   #4
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Your timing table is very conservative I think you said it is a base map, did you got it tuned?
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Old 09-03-2016, 02:45 PM   #5
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Quote:
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did you got it tuned?
no i didnt got it tuned. just power runs
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Old 09-03-2016, 02:54 PM   #6
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You need to tune it and install and tune an ebc.
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Old 09-03-2016, 02:57 PM   #7
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Originally Posted by elior77 View Post
You need to tune it and install and tune an ebc.
Since you know everything that i NEED to do why don't i just let u borrow the car for a couple years so u can make it right for me. If u could actually read youd know i cant use EBC or it will spike. Ive tried standalone ebc, mbc, and hydra ebc. The only way it wont spike is straight spring pressure
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Old 09-03-2016, 04:45 PM   #8
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Listen love, I just tuned an NB with the same turbo and ebc, so I think I know what I'm talking about.

Do you actually asking something or just looking to fight?
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Old 09-03-2016, 04:52 PM   #9
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Quote:
Originally Posted by LownSlow616 View Post
Since you know everything that i NEED to do why don't i just let u borrow the car for a couple years so u can make it right for me. If u could actually read youd know i cant use EBC or it will spike. Ive tried standalone ebc, mbc, and hydra ebc. The only way it wont spike is straight spring pressure
If it's not creeping on spring pressure an EBC should be able to maintain the same target boost. You just need to keep working on the tune. If you for instance find where it spikes and bleed it off early enough you should prevent the spike. There is no reason that an EBC would cause a spike over just the spring rate other than it not being tuned correctly.
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Old 09-03-2016, 06:12 PM   #10
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I have an aem tru boost. I can set at which pressure the solenoid stops sending pressure to the top of the diaphragm(holding it closed)
If i set that number near or above the spring pressure, it will spike when i shift at high rpms
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Old 09-03-2016, 06:24 PM   #11
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OP stop acting like a ----.
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Old 09-03-2016, 06:48 PM   #12
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The spool is dookie. I make 6 psi at like 2500. What's wrong with it?
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Old 09-03-2016, 06:53 PM   #13
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Also..it spools ALOT better on the actual road
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Old 09-03-2016, 06:53 PM   #14
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The spool is dookie. I make 6 psi at like 2500. What's wrong with it?
Can u read? It spools worse on the dyno and the wg cracks open at 7 psi and climbs up to its spring pressure
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Old 09-03-2016, 06:55 PM   #15
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Sorry, I would have a bad attitude if I had a dry dick too.

You said it cracks at 7, so why does it spool like **** to 6?
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Old 09-03-2016, 07:07 PM   #16
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this is from the previous run. it spools fine. like i said, the wg just opens way earlier than target psi. and if i use ebc to hold it closed longer, it spikes on up shifts.



im happy rn. i made good power to beat mustangs at the strip and not crazy torque to blow the stock engine. im happy asf for 261 whp on a conservative timing map that will never knock
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Old 09-03-2016, 07:21 PM   #17
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That's good hp on a stock block.
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Old 09-03-2016, 07:27 PM   #18
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Thx
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Old 09-04-2016, 12:10 AM   #19
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Good power as expected (for that much timing/boost). What really surprises me about the torque is how flat it is and how flat it stays all the way up, but then it looks like you're dropping timing from 19 to 16 if it goes to 14 like you say.

I'd congratulate you on really clever tuning (this is about the least abusive way to make 250 and try to keep the rods intact) but it looks like you got that result on accident lol

Congrats anyway
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Old 09-04-2016, 12:23 AM   #20
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Yeah I knew I was going to get flamed for the lack of torque but im actually happy about it for the stock rods. Its just preparing me for the feeling of a big turbo car when i go gt2871 in the future.
Next is 1320 trap speed

ALSO---- thank u for telling me to get a baseline number. I could've started turning things up on the street and popped the engine. I didnt think i was anywhere near the "limit"
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