Dyno'd today
Dyno'd today
Synaptic 3 Performance - Candia, NH
I was experiencing horrible bucking earlier and posted a thread about it. Yes it was a fuel issue! im glad i purchased a updated fuel relay last week. i didnt swap it out until the dyno. they swapped the stock boost solenoid out with a 3 port solenoid, to help spooling. cost $99 plus labor $85. now car is ready for mustang dyno.
so heres what happened. the first run dyno shuts down at 4Kish. he tells me the cycle duty was 115%!!! he asks me if i have replaced the fuel relay yet i tell him no but i bought one and its in the glove box. he says its already got a green one in it so he swaps out the green for green, and does another pull. it shuts down again. now he says to me you might need to replace the fuel pump. then he says let me make sure its the right relay. this is why i didnt change it either after i bought it. to me it looked like the black was already swapped out of the green. some reason we both looked at the diagram posted on this forum wrong. now he sees that there is a black one that is supposed to be swapped. ok. ready for another pull. car pulls like a beast to 7500. but he tells me that the duty cycle is still hitting 100% just before redline. he sugests upgrading the fuel pump to a 340, and adding a down pipe. so i need more fuel and more flow. to allow the turbo to go higher psi safely.
sadly, because of the problem with the fuel relay we never got a decent base run with my intake and exhaust prior to tuning.
so here are some numbers. turbo runs safely at 24.9 max boost begining at 3200rpms then maintains max boost till 6350 with an average of 21.7psi and a minimum of 10.9psi.
AFR is a very nice line. the minimum was 11.2, max was at 11.8, with an average of 11.6
Torque - 299/Power - 298
this is recalculated in the end by the machine for some reason because after the run the numbers posted 308/307. he explained its something the machine does but i didnt catch the whole explanation behind it.
i asked him to make a guess what power with an upgraded fuel pump and nice flowing down pipe would make hes thinking about 25-30 more.
car runs beautifully now. nice heavy pulls. no jerking any more. made some decent numbers for an intake, catback exhaust, and tune.
dyno tune cost was $500. making the grand total for todays dyno $712
I was experiencing horrible bucking earlier and posted a thread about it. Yes it was a fuel issue! im glad i purchased a updated fuel relay last week. i didnt swap it out until the dyno. they swapped the stock boost solenoid out with a 3 port solenoid, to help spooling. cost $99 plus labor $85. now car is ready for mustang dyno.
so heres what happened. the first run dyno shuts down at 4Kish. he tells me the cycle duty was 115%!!! he asks me if i have replaced the fuel relay yet i tell him no but i bought one and its in the glove box. he says its already got a green one in it so he swaps out the green for green, and does another pull. it shuts down again. now he says to me you might need to replace the fuel pump. then he says let me make sure its the right relay. this is why i didnt change it either after i bought it. to me it looked like the black was already swapped out of the green. some reason we both looked at the diagram posted on this forum wrong. now he sees that there is a black one that is supposed to be swapped. ok. ready for another pull. car pulls like a beast to 7500. but he tells me that the duty cycle is still hitting 100% just before redline. he sugests upgrading the fuel pump to a 340, and adding a down pipe. so i need more fuel and more flow. to allow the turbo to go higher psi safely.
sadly, because of the problem with the fuel relay we never got a decent base run with my intake and exhaust prior to tuning.
so here are some numbers. turbo runs safely at 24.9 max boost begining at 3200rpms then maintains max boost till 6350 with an average of 21.7psi and a minimum of 10.9psi.
AFR is a very nice line. the minimum was 11.2, max was at 11.8, with an average of 11.6
Torque - 299/Power - 298
this is recalculated in the end by the machine for some reason because after the run the numbers posted 308/307. he explained its something the machine does but i didnt catch the whole explanation behind it.
i asked him to make a guess what power with an upgraded fuel pump and nice flowing down pipe would make hes thinking about 25-30 more.
car runs beautifully now. nice heavy pulls. no jerking any more. made some decent numbers for an intake, catback exhaust, and tune.
dyno tune cost was $500. making the grand total for todays dyno $712
Last edited by SPYKE-ZEE; Sep 3, 2011 at 09:28 AM.
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From: CANADA YO!
im running 100% stock fuel system with 28 psi and my duty is at like 85%.... there should be no reason why you need to replace your fuel pump
and that was when i was on the black relay just with bolt ons 330whp 390wtq
and that was when i was on the black relay just with bolt ons 330whp 390wtq
Last edited by guswaym; Sep 7, 2011 at 06:21 PM.
If thats the case, then whats up on my end? maybe i have a crap fuel pump...
we have 93 in nh so i would assume he is running that but he will have to chime in as 91 is available as well