W/S. Stock appearing IHI boost numbers?

greendury

New member
Jan 28, 2011
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I know boost doesn't tell the hole tale but what are guys seeing out of there s300 based ihi on the pulling track?? I'm only seeing around 34# at 3700rpm. I'm having a hard time driving the charger hard enough. 66m comp and 74mm turbine. Added some timeing seemed to help some.
 

greendury

New member
Jan 28, 2011
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Yea that's what I was hoping for but I am just not seeing it. Maybe it's in the tuning
 

duramaxzak

Wanna be puller!
Nov 22, 2008
2,431
14
38
Minnesota
Make sure the waste gate is all the way closed and sealing good. When I ran a DTS Billet 66/74 IHI I wired the wastegate shut and was seeing 43-45psi pulling.
 

greendury

New member
Jan 28, 2011
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I don't think the waste gate is moving because I blocked the reference hose to it but I could try wiring it also. Thanks for the input
 

IOWA LLY

Yes, its really me
Feb 23, 2007
2,275
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I don't think the waste gate is moving because I blocked the reference hose to it but I could try wiring it also. Thanks for the input
Drive pressure will blow it open as well......


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greendury

New member
Jan 28, 2011
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I guess I didn't think of drive pressure being able to over come the spring in the gate. I wish I would have just welded it when it was apart.
 

pnw_lml

New member
Apr 26, 2016
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I've seen 41 psi on stock everything expect motorops tunes


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pnw_lml

New member
Apr 26, 2016
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Nah, stock lml turbo. I wasn't familiar with imi til I googled it, now I'm just kinda familiar haha


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wilsondiesel

Member
Nov 11, 2015
190
0
16
Sedalia, MO
On the street I have seen 43psi or so running a DTS 69/74 IHI running 100% over injectors and 10mm pump. Didn't pay attention on the track but will this weekend as I've got a pull Friday and Saturday night.
 

greendury

New member
Jan 28, 2011
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I am running 100s with a 12mm pump. Thinking maybe to much fuel for my now 69/74 ihi. Possible that a smaller injector will allow me to run a bigger pulse width which should help drive the turbo harder.