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  1. J

    Why does my car seem to "learn" to stall?!!!

    So my tuner tweaks my tune for me cause the car will idle down and stall when it's cold, but gets better when it warms up. When I leave, it idles down to 1100rpm till I come to a stop and then it drops to the usual 800rpm and does this the first few cold starts. Then it slowly goes down...
  2. J

    Boosted 4v FRPS KB Disk and now have codes?

    My idle when coming to a stop has had periodic eppisodes of stalling. I had already replaced the IAC, cleaned the MAF and already have a new TPS. It doesn't do it all the time...just some times. Yesterday, when I got home, I replaced my FRPS and put the KB disk under it. When I started my...
  3. J

    Moved oil filter relocation kit and now no oil pressure...

    How do I test if my oil pump went out or the relief valve went? 99 cobra motor w/ forged internals, but original oil pump. Car doesn't sound like it has no oil pressure, like when you first start if after an oil change, but there is no oil getting to the turbo where the mechanical oil...
  4. J

    Oil in the compressor side build up in MP T70 on a 4v Cobra motor. Fix???

    I have a MP T70 .68 A/R on a built 99 4v Cobor motor. Oil feed line is 1/8" NPT and I have a .06 restrictor with 1/2" drain line. WOT warm oil pressure is around 90psi. I see no oil in the down pipe/exhaust side, just a little in the compressor side, mostly in the discharge pipe. I don't...
  5. J

    Is my oil pressure high?? 99 4V built w/ Turbo

    I'm wondering if I should drop down to 5w20 Mobile One oil. My oil pressure seems high from what people have told me to expect. 100psi or so at start up cold. Hot at idle, I may see 85psi, but never lower. With engine oil cooler, temp when warm stays around 200-220deg. I am pushing oil...
  6. J

    Does anyone sell a 3" cable cut out?

    I've read too many people saying the electric ones went out. I can't seem to find a mechanical cable in a 3" though. Anyone make their own? I can feel that going from a 3" down pipe to dumped summitt 15" x 3" glass pack and switching to a Y pipe into stock 99 cobra cat back I lost power. I...
  7. J

    Top end noises when the engine is cooling off normal?

    I hear metal cooling sounds like creaks, cracks and pops...not like anything broke, just like when hot metal is cooling off. Is this normal since these engines are aluminum and expand and contract?? -Jonny
  8. J

    Mach460 sounds choppy on the right side, but only when the car is on!

    I have the Mach 460 system stock radio and single CD player. About a month ago, the right side speakers front and back started sounding choppy, but only when the car is on. I swapped the interfeirence sensors from left to right with no effect and had the Alternator checked, but that's all good...
  9. J

    Which serpentine belt are ya'll using? My new one squeals till warm!

    My current issue is, the belt squeals untill my car is warmed up. Annoying and embarrassing! I did a 2v to 4v swap. My buddy's 4v didn't squeal before I rebuilt it and dropped it in my car. I put his stock belt on and it squealed. I went up to O'Riley's and got a new stock length belt and...
  10. J

    Turbo 4v...do I have to run 91-94 octane or can I get tuned for 87 or 89?

    I was wondering what the difference in the tune is between say 89 octane and 91 or 93 octane. With gas prices being crazy as they are, if all I need is less timing, change in fuel map, etc for 87 or 89 octane, why not do it? Does 91 burn cleaner than 87? Any insight would be great...
  11. J

    E-bay hot side guys...what boost do you see compared to wastegate spring??

    With not boost controller on my Tial 44mm wastegate: Large Green spring rated at 11.603psi I see about 16psi. Small Blue spring rated at 7.252psi I see about 10psi. (Per this chart: http://www.tialmedia.com/documents/w3_tial_44_sp.pdf) I'm wondering if this is a result of the design...
  12. J

    Boost controller opens the wastegate at idle...is this normal???

    My wastegate does not dump back into the down pipe. I think the manual boost controller keeping it open at idle is messing with my idle quality. Do any of ya'll have a similar problem? (answered this myself...I was over thinking it. wastegate is well after the front O2s, so obviously it has...
  13. J

    Anyone running NGK R5724-9s or AR-93s?

    I'm going to put some new plugs in and saw some of the Terminator guys with ported and assorted twin screws running and recomending the NGK R5724-9 or AR-93s as they seem to clean up idle quality and less likely to have spark blow out. Since I'm a 4v Turbo guy, I thought I'd see if anyone...
  14. J

    What kind of gas mileage MPGs are you getting??

    I think there is still room in my tune for improvement judging from my A/F guage, but with a fairly even amount of town and highway, I'm seing mid 16pmg on avge with 13# of boost and mid 500rwhp/rwtq...does that sound about right?? I thought my mileage would be better than this if I kept my...
  15. J

    Built Cobra Motor + Turbo. Cold start is good, warm start it dies...ideas??

    I have a built 99 Cobra motor in my car with a single turbo. MAF is blow through with about 18" before the TB and about 9" fromt he final bend with a screen to smooth things out. At cold start, it's fine and I don't have to touch the throttle at all. If I drive it for a minute, park and try...
  16. J

    "Not Ready" Evap and Cat on EGR delete 4V swap into my GT, help!

    I have a 2000 Mustang GT with a built '99 Cobra motor and a turbo. I have a turbo and just deleted the EGR in favor of not dealing with where to plug in the tube. I have a Single 3" high flow cat and rear O2. Problem is, I can't pass emissions because the Evap in the gas tank and the...
  17. J

    After Cat O2s...do I have to have 2??? Getting a code...

    I was told I could splice one harness into the other and just use one O2 since I'm just running a turbo with single 3" down pipe to cat to muffler and out the back a la V-6 style. Problem is I'm getting the codes P0141 and P0161 for preheat malfunction to the down stream O2 left and right...
  18. J

    Flex pipe leaking! Advice, please!

    44mm Tial open on cold starts???! Advice, please! Ok, what I thought was the flex pipe leaking turned out to be the wastegate. When I start up the car on cold mornings,the wastegate opens for a little bit...is this normal? I have a manual adjuster and a 7lb spring that make 12psi...
  19. J

    Plug gap suggestions for 12psi on Autolite 103s?

    I'm changing plugs and just wondering where I should gap. Don't want too tight and don't want blow out. It's my DD and made 504, but will be tuned again since the GT pumps went in and will probably make more like 560 on 12psi pulling to 6k now. Was running out of fuel at 5k before. I...
  20. J

    Where can I get '03-'04 Cobra fuel pump filters?

    I need a couple of the bags that go on the end of the cobra fuel pumps. Even Ford doesn't sell them by them selves... Does anyone else stock them?? -Jonny
  21. J

    Koni Yellow S/A shocks 8041 1270 for Cobra IRS

    I just bought these and I need a stronger set for my combo. They have about 1000 miles, so basically nothing! I paid $260. Asking $200 + shipping OBO. These are adjustable and I bet they would work pretty well on a stiff suspension strait axle too. -Jonny Texting me is the fastest way to get...
  22. J

    Question for data logging with the NGK AFX wideband system.

    The Analog out put is just a posative wire and ground wire...do I need to put a special connector on this for data logging using SCT tuning software via lap top? I don't want to take it to my tuner and he can't plug in and see A/F graph on his laptop, ya know?! -Jonny
  23. J

    Which Wideband between NGK Powerdex AFX, Innovate LM-1 or LC-1 for street & tuning

    I like the display of the NGK and heard good things. LC-1 seems simple and would fit in a guage pod. LM-1 looks like more bang for the buck, but big hand held deal mounts where??!! -Jonny
  24. J

    How can I make my turbo spool sooner?

    I have a built 99 Cobra motor with a Master Power T-70 .68 A/R turbo. I starts building boost at 3000rpm...can I change housing, wheel, etc to get it to spool faster? I'd like to start making boost by 2000rpm or 2500 at least. I only needed 12psi to get the power I wanted for the street...
  25. J

    How much power should I be able to support with stock pumps and BAP?

    I have a 99 cobra motor, stock bore and stroke, 16cc pistons, T70 .68 A/R MP Turbo making 12psi and I'm running out of fuel at 504/533 at 5000rpm through a manual tranny with Stock cobra pumps, 20amp Bap, stock lines and rails with no back flow valve. Does this sound right? I thought it would...

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