Why Less boost in 2nd, 3rd.. gears ?? Help
07-31-2006, 07:46 PM
#1
1.0 BAR
Thread Starter
Join Date: May 2006
Posts: 295
Why Less boost in 2nd, 3rd.. gears ?? Help
Ok, Heres my problem. Im pushing 8 lbs on stock internal wastegate on dsm t25. (1g dsm BOV) My ride is 92 Honda Civic d16z6.
The Problem:
If I go from a stop, my first gear builds 8lbs (like it should), but after I shift, sometimes 2nd only builds 6lbs, same with 3rd. But.. If I start in second or third (from a roll) it builds 8lbs fine. Am I shifting too fast, and not letting all the pressure out? or is it cause my rpm's are already higher, and its pushing the wastegate open early? Im confused
The Problem:
If I go from a stop, my first gear builds 8lbs (like it should), but after I shift, sometimes 2nd only builds 6lbs, same with 3rd. But.. If I start in second or third (from a roll) it builds 8lbs fine. Am I shifting too fast, and not letting all the pressure out? or is it cause my rpm's are already higher, and its pushing the wastegate open early? Im confused
07-31-2006, 09:31 PM
#5
3.0 BAR
Join Date: Apr 2004
Posts: 9,800
Re: Why Less boost in 2nd, 3rd.. gears ?? Help
Originally Posted by StinkyFeet
im using a HF mani, so a external will prob out of the question. And I dont kno if another actuator would push the 8lb boost I want.
Originally Posted by ghettoturbo
im gonna guess the actuator is on its way out, try to find another one with a similar opening psi
08-01-2006, 12:23 PM
#9
Administrator
Join Date: Dec 2002
Posts: 13,991
Re: Why Less boost in 2nd, 3rd.. gears ?? Help
Originally Posted by jagojon3
Ditch the wastegate actuator and run a spring! It's a simple yet effective solution.
I'd try shimming the actuator or putting a helper spring on the arm. But it alot of cases this can be a result from a cracked exhaust housing. The best way to fix this would be a external gate.
