downpipe and boost SPIKE - Subaru WRX Forum
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post #1 of 30 Old 07-21-2007, 08:37 PM Thread Starter
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downpipe and boost SPIKE

Just put on a dp and when i am wot going into 5th the boost spike dam near 18 psi makes the fuel cut go on Whats next boost control. or save for utec
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post #2 of 30 Old 07-21-2007, 09:16 PM
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cobb ap would work also.... tactrix cables and an XPS map would be the cheapest way to go untill you can get a protune

If you make me look impress me....
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post #3 of 30 Old 07-21-2007, 09:51 PM
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[QUOTE=ArmyWRX;162111]cobb ap would work also.... tactrix cables and an XPS map

xpt makes the maps not xps

MIKE
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post #4 of 30 Old 07-21-2007, 10:45 PM Thread Starter
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ebc

what about an ebc and some dyno time
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post #5 of 30 Old 07-21-2007, 10:49 PM
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i would try and stay away frme the bc and get some EM or as stated a good tune(dyno) its definitley a wastgate duty issue(ecu controled)

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post #6 of 30 Old 07-21-2007, 11:01 PM
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Just put on a dp and when i am wot going into 5th the boost spike dam near 18 psi makes the fuel cut go on Whats next boost control. or save for utec
04+ WRX with a DP and no EM is a Bad idea. You can have some serious issues.

My name is Ken and I am a HP Junkie.
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post #7 of 30 Old 07-21-2007, 11:19 PM Thread Starter
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Hua

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04+ WRX with a DP and no EM is a Bad idea. You can have some serious issues.

Never herd that befor
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post #8 of 30 Old 07-22-2007, 01:03 AM
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I had some sort of problem with my 02 4000rpm into forth and suddenly it goes to 15psi, would this boost level hurt my engine badly? Well anyways I am waiting for my cable that I order!!!

Jes's 02 RX
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post #9 of 30 Old 07-22-2007, 09:24 PM
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Never herd that befor
The delay between open loop and closed loop fueling is too long and isn't good for the motor.

My name is Ken and I am a HP Junkie.
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post #10 of 30 Old 07-22-2007, 09:29 PM Thread Starter
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so the idea

i am going to get a dyno can they tune the stock computer or do i need to buy something? like a cable
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post #11 of 30 Old 07-23-2007, 12:22 AM
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tactrix is the way to go if you dont have a lot of cash
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post #12 of 30 Old 07-23-2007, 01:53 AM
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wow....

common knowledge ftl. sorry but theres about 2189426398476 posts about EM and boost spike.

yes the spike is extremely dangerous. without tuning you can be running 12.0+ afrs in full boost. thats bad.

Robby
02 rex is gone.
I defected to an evo :)
Evo is gone :(
Now I got nothing.
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post #13 of 30 Old 07-24-2007, 02:33 PM
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12 afr isnt bad at all if you go over 14.7 then you running way to lean but 12 is still a little rich must tuners tune for 12.5-13 at wot. But boost spike is always something you want to stay away from.
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post #14 of 30 Old 07-25-2007, 01:25 AM
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Boost spikes yeah they might be bad, but they really shouded me some good power when it spiked to 15to about 15.5. Well an 05 sti was starting to pull ahead of me when my car boot spike AND I WAS ROLLING, bye bye sti pull at least 1.5 cars ahead of him with my big as smile lol.

Jes's 02 RX
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post #15 of 30 Old 07-26-2007, 12:51 AM
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Im having the same problem i have a dp and axle back and im spiking to 1.09kpa or 15.8psi if i even converted that correctly. Anything you can do to stop it without EM. Im broke for awhile
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