Insanely Short Power Band

[Frank Dolla$]

Whats up everyone? Figured id use this post to introduce myself and ask a question or two. Names Frank and i own an auto 96 GTS-t here in Okinawa, Japan. Mods i have are full turbo back exhuast, greddy FMIC, BLitz DSBC, HKS panel filter, BOV, and NGK iridum plugs Gapped @ 0.8

The question i have (which may be a dumb one) but i have done some research and havent found anything. I increased the boost to about .85 and i noticed an diff in performance, but the biggest gain comes at 6000 rpm to redline. And its REALLY noticeable. So my question is why has the powerband shifted this way? I have tried resetting the ecu, or do i just need it tuned? Any advice would be helpful. Thanks.

[wasnt me]

hey frank....

i would check the settings on the EBC maybe the gain is set too late

cheers luke

Edited December 28, 2008 by wasnt me

[toffy]

^ and it needs a tune, easiest way to do this is to use an apexi safc and sitc

[Frank Dolla$]

hey frank....

i would check the settings on the EBC maybe the gain is set too late

cheers luke

The boost is full on by about 4000.

^ and it needs a tune, easiest way to do this is to use an apexi safc and sitc

Whats a sitc?

Thanks for the replys.

[Cjmartz2k]

Frank, are you on zeroyon?

[toffy]

super ignition timing convertor

so your tuner can adjust the timing whilst adjusting fuel

[R34GTFOUR]

or just get a powerfc, much easier

[Frank Dolla$]

Frank, are you on zeroyon?

Naw, i didnt like that forum too much. Not as much BS here on AUS, IMO

super ignition timing convertor

so your tuner can adjust the timing whilst adjusting fuel

Gottcha, i was hopin it would be somethin i fix, cause that means i got to get off ass and go find a tuner. But thanks for the help.

[race_snooze]

R and R maybe

[l0WRB]

boost solenoid? variable cam timing kicking back in? i know alot of stock skylines with usual mods u can feel them pull extra hard at 5800-6000 to redline i always thought it was the variable cam timing kicking back in?

[Don Dada]

rich & retard

Do a search an some reading Plenty of info!!!

[R31Nismoid]

To really tell - you need to get it on a dyno and get

AFR plots

Boost plots

And then see where its going wrong. Could be ECU, could be boost control.

Hard to tell over the internet

[Cjmartz2k]

Frank, PM me if you want to meet up and take a look.

[MBS206]

Mine used to feel the same when I was running that sort of boost.

Would just snap from 6000 - 7000RPM, reason it was doing it like it was, was because between 4 - 5K, torque was coming on strong, but 5 - 6K I dropped off in power, then over the 6 - 7K range I was picking up 30 - 40RWKW within about 100RPM (6 - 6.1K) and it'd pull it's hardest to redline.

[Frank Dolla$]

Thanks for all the replys. Ill update when/if i figure it out. You guys got me headed in the right direction though.