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View Full Version : seeing boost, but no power


blk04cobra1
08-26-2005, 03:07 PM
Ive been reluctant to post this, but I need some help or at least ideas that we may have not already checked...short story

F1-A swap, return style fuel system, full exhaust, custom dyno tune...yielded 13psi (accurate for pulley size) but no power...in fact, just a little over stock :rotf:

any ideas?

Linn@Amazon
08-26-2005, 05:59 PM
what is your data showing you?

Dave B.
08-26-2005, 09:07 PM
list mods

blk04cobra1
08-26-2005, 10:24 PM
well we think a leaky bypass valve was the culprit...ATI was nice enough to overnight one yesterday...and now we're seeing about 6 more lbs of boost and the car is 100% stronger...now just have to get the tune adjusted :( (which means more damn $$$)

mods are in the sig (just added)

03ZINCSVT
08-28-2005, 09:45 PM
Ive been reluctant to post this, but I need some help or at least ideas that we may have not already checked...short story

F1-A swap, return style fuel system, full exhaust, custom dyno tune...yielded 13psi (accurate for pulley size) but no power...in fact, just a little over stock :rotf:

any ideas?Also seeing low power.....just dynoed 432 rwhp/480 tq.....I know, extreme torque. I don't know what happen?????!!!!!! mods are listed below I am not sure if this is where I need to be or if it needs to be higher. I am not sure if I need another tune....I do have the stock pulley tune that comes with predator. Do I need to get another one custom for my mods???

blk04cobra1
08-29-2005, 08:40 AM
03Zincsvt---a custom dyno tune is the way to go, the Predator box tune is very safe and usually yields low power. From your sig, you should be in the 460-470 range (on a dynojet dyno, if it was a mustang dyno, then your numbers are pretty accurate). I see you're in Columbia...Amazon will have their dyno up soon and would recommend using Rick and Linn's expertise on cobra tuning :thumbsup:

Linn@Amazon
08-29-2005, 01:35 PM
you will benefit from having a custom tune done..especially if you are having issues...

03ZINCSVT
08-30-2005, 12:38 AM
you will benefit from having a custom tune done..especially if you are having issues...
When are you guys going to be up and running so I could make the trip....also what does a custom tune usually run? I kinda figured that I should be in the 460-470 range but was not too sure, if you know what I mean. Thanks for the help!:thumbsup:

blk04cobra1
08-30-2005, 08:36 AM
all cars are different, that's why I like to call a dyno "the humble maker"...good luck, but I dont see why you shouldnt be able to hit at least 450rwhp :thumbsup:

03ZINCSVT
08-30-2005, 12:26 PM
Thanks.....I was really disapointed when I saw the results. Not so much with the torque but damn that was a lot......

blk04cobra1
08-30-2005, 01:54 PM
If you're interested in a new tuner, Im getting mine retuned next week...you can maybe set up a time with my tuner and it will be on a Dynojet :thumbsup:

Linn@Amazon
08-30-2005, 04:58 PM
When are you guys going to be up and running so I could make the trip....also what does a custom tune usually run? I kinda figured that I should be in the 460-470 range but was not too sure, if you know what I mean. Thanks for the help!:thumbsup:

we are up and running on a limited basis...call me 864 332 0955