if a stock vortech kit was installed on my 95 gt with the only other mods being headers xpipe exhaust would there be any need to get a tune or can i just use the supplied FMU and MSD boost retard. im just looking at running stock psi and such, proly make close to 275 or 280 at the wheels.
I asked this a while back as well. Here's the catch....
FMU = temporarily, yes. Get tune ASAP. I actually asked this for my buddy, who has a '95 GT w/ Vortech. Also gonna eventually do this myself. He ran the FMU for a whole year!!! But he never took it to the track and never really "got on it". He just got it tuned by a new local dyno tuning company and it is a world of difference, not to mention the sense of security.
There is nothing wrong with running an FMU is you tune it properly. FMUs have a bad name and are often called "band-aids", but yet they work on the same principle as a FPR, which have been used for years with success.
Whenever you use a poweradder you must tune it on a dyno to get maximum performance and reliability.
As Shaun said....nothing "wrong" with using an FMU for longer periods...it's just a little more "tricky" to tune. You should see 325+ to the wheels with the other mods and the Vortech.
RC
so basically, i have to get a tune. therefore i also have to get bigger injectors and a MAF tuned for that, then go to a dyno to get the chip reflashed. thast almost 1g right there. or is it possible to just use the FMU, stock injectors and MAF and get that setup dyno tuned? very confusing stuff... how much have you guys paid for a dyno tune?
so basically, i have to get a tune. therefore i also have to get bigger injectors and a MAF tuned for that, then go to a dyno to get the chip reflashed. thast almost 1g right there. or is it possible to just use the FMU, stock injectors and MAF and get that setup dyno tuned? very confusing stuff... how much have you guys paid for a dyno tune?
I dont know what your fuel system specs are but just a dyno tune doesnt cost that much if you dont get a chip. I paid $236 for about 2 hours on the dyno. I have an FMU so I simply tuned the car by swapping FMU discs, playing with the fuel pressure on the FPR, and adjusting the timing. If you go with large injectors and no FMU you will have to chip it which will add to the cost like you said.
i appreciate all the replies this far...so heres what im thinking if i stay with the fmu and go to a dyno will they do the tune i.e. timing, fpr, and such? i wold have to buy an adjustable fpr so they can do that but other than that will it be safe to run the fmu with the AFPR having them use a dyno to dial in the fuel and timing? plus i would have the MSD BTM as well. i just dont wanna deal with pinging or anything like that. i also dont want to have to buy new injectors/MAF. but lets say i go that route...buyfordracing sells a 90mm LMAF with 42 lbers for 219 or so...is the LMAF tuned to the 42lbers so that all i would need would be a new chip burn? and if i do get a new chip burn how much does that dyno tune and chip usually run? also if i go the FMU route, where do i buy disks, do they sell them by the set? i appreciate everyones help here, this is why stangnet rocks! THANKS!!
i appreciate all the replies this far...so heres what im thinking if i stay with the fmu and go to a dyno will they do the tune i.e. timing, fpr, and such? i wold have to buy an adjustable fpr so they can do that but other than that will it be safe to run the fmu with the AFPR having them use a dyno to dial in the fuel and timing? plus i would have the MSD BTM as well. i just dont wanna deal with pinging or anything like that. i also dont want to have to buy new injectors/MAF. but lets say i go that route...buyfordracing sells a 90mm LMAF with 42 lbers for 219 or so...is the LMAF tuned to the 42lbers so that all i would need would be a new chip burn? and if i do get a new chip burn how much does that dyno tune and chip usually run? also if i go the FMU route, where do i buy disks, do they sell them by the set? i appreciate everyones help here, this is why stangnet rocks! THANKS!!
WHoever does your tuning should be able to help you with most of those questions...it will be a few hundred for a chip WITH the dyno. You can get a knob on the FMU that bleeds the boost, so you can alter the amt of fuel retention.. I dont know if you still need the FMU, but I still have mine here from the Vortech, WITH the bleeder valve on it. I just havent had a chance to list it on EBAY yet.