Boost and hp

[BOTTLEFED5]

Just some food for thought, you will not be shifting into 5th in the quarter with the 4.30 as long as it's on a 28" tire, I would get everything worked out before you take it to the track. Something defiantly sounds wrong with the combo for sure, who installed the cams?

 

[freebird50]

Do you have the IMRC plates still in or are they removed? If they're in that could be a big problem lol

They are removed

 

[freebird50]

Just some food for thought, you will not be shifting into 5th in the quarter with the 4.30 as long as it's on a 28" tire, I would get everything worked out before you take it to the track. Something defiantly sounds wrong with the combo for sure, who installed the cams?

Rescino performance in sf built my motor. Installed the cams. Reused stock cams

 

[freebird50]

What kind of shape are the mufflers in? I wonder if the baffles inside are falling apart? Might be worth making a pull with the catback disconnected.

I just got new mufflers a year ago. Flowmasters.

 

[freebird50]

bro.. get that car to a mustang specialist before they melt this fukin thing. You are gonna fuk around and the car is gonna nip a piston. Let a ford specialist do a compression and leakdown test to verify the engine is in good health. These guys are struggling to learn your car... its become an experiment for them. Are u being billed by the hour?

Yeah. I had it on another dyno and it was almost 100 more hp. Car runs perfectly fine. Doesn't smoke or burn oil. This whole job has cost 3500. That included a bunch of work such as installing a t56. Picking it up tomorrow. Won't have much to spend on it for a while after this. Nextgen is a mustang shop apparently. Been my mechanic for 5 years. Further investigation will happen but I need to recoup some funds. Thanks.

 

[freebird50]

When I first got my motor built in 2018 I had an old Paxton Novi 1000 with a stock sized crank pulley. Don't remember the supercharger pulley size. 8 pounds of boost. Put down 407hp. At nextgen. Then I got the vortech ti trim with innovators west 10 percent overdrive pulley and put down 507hp at 17 pounds.again at nextgen. A while later i moved away closer to AED and my air fuel gauge quit and i had shaun verify everything. With no mods since last time at 507hp at nextgen, on AED's dyno i put down 594hp. Then I changed the supercharger pulley to a 2.75 and put down 556hp at 20 psi back again at nextgen. Most recent time on the dyno today I put down 668hp at 26psi. At nextgen. Just a history of the power increases. And not saying either AED or Nextgen has a better dyno or whatever. Just my experience and what I've seen with my car. Thanks.

 

[freebird50]

Reason for jump in boost from 20 to 26 pounds is because I had nextgen redu my supercharger intake with an anderson power pipe and bigger air filter apparently it added a lot of boost. Was using the stock vortech intake that came with my kit and a wimpy air filter before. Be good to go to AED again to see what the dyno reads their for comparison as well.

 

[robvas]

You got 6psi from a power pipe?

 

[freebird50]

You got 6psi from a power pipe?

Apparently so...

 

[Adower]

When I first got my motor built in 2018 I had an old Paxton Novi 1000 with a stock sized crank pulley. Don't remember the supercharger pulley size. 8 pounds of boost. Put down 407hp. At nextgen. Then I got the vortech ti trim with innovators west 10 percent overdrive pulley and put down 507hp at 17 pounds.again at nextgen. A while later i moved away closer to AED and my air fuel gauge quit and i had shaun verify everything. With no mods since last time at 507hp at nextgen, on AED's dyno i put down 594hp. Then I changed the supercharger pulley to a 2.75 and put down 556hp at 20 psi back again at nextgen. Most recent time on the dyno today I put down 668hp at 26psi. At nextgen. Just a history of the power increases. And not saying either AED or Nextgen has a better dyno or whatever. Just my experience and what I've seen with my car. Thanks.

If you’re seeing a consistent 100hp differences between those two dynos then maybe your car is fine? If true, your car “would” be making near or 800+ on AED Dyno.

See if you can find another place to make a couple pulls and check what output you get.

 

[freebird50]

If you’re seeing a consistent 100hp differences between those two dynos then maybe your car is fine? If true, your car “would” be making near or 800+ on AED Dyno.

See if you can find another place to make a couple pulls and check what output you get.

Yeah I got it back and honestly it scares the s*** out of me. Will blow the tires off at 90. Get to 160 like it's no big deal. Feels extremely strong. I need to check the output on another dyno.

 

[freebird50]

Here's some pictures of the vehicle

 

[dan1982]

Yea I wouldn't be taking your car to AED if I were you. The fact that he doesn't know why the boost is that high isn't good. OR the A/A is a garbage brand or there is something else happening.. I run a 2000hp A/A cooler in my car and I'm making in the 1200+hp range. You don't need to go COP, you have a lot of other things going on man. Don't go and tell NEXTGEN how to do their job based off the internet though lol. But I will say that you need to get that car to someone who specializes in mustangs. You also need to get a nations alternator with a regulator then it won't matter the pulley the size. I ran a 2.5" and now I run a 2.70" alternator pulley.

I'll say this again, it's not going to be what you want to hear but it'll save you thousands if not a new motor in the end.. Take the car to someone who specializes in Mustangs.. Take it to AED and have them look at it. Or Hugo at HLM Motorsports.

@freebird50 ... this guy is a hardcore cobra guy, this is great advice. ALSO... the builder had issues with blowing out spark/ AND a mass airflow issue AND it kept smokin alternators... He even had you go COIL ON PLUG ignition. I would heed 98s advice..... hes got a 1200HP cobra alive and together. The advice doesnt get any better than this.

 

[freebird50]

@freebird50 ... this guy is a hardcore cobra guy, this is great advice. ALSO... the builder had issues with blowing out spark/ AND a mass airflow issue AND it kept smokin alternators... He even had you go COIL ON PLUG ignition. I would heed 98s advice..... hes got a 1200HP cobra alive and together. The advice doesnt get any better than this.

I never had a mass air flow issue. Colder range plugs fixed my spark blowout. I never went coil on plug. My tuner recommended I do but he says it's not absolutely necessary. Took saleen 98 3 motors as well to get all dialed in. I'm on my first motor. Since 2018. I agree he knows his stuff. But my tuner, Matt from nextgen is a great mechanic. He wouldn't ever steer me wrong. The reason I smoked alternators was overspending and in my other thread I said the 3.2 in pulley has made my alternator last for 2 years. I replaced it for no good reason anyway but it is not causing my bad idle.

 

[freebird50]

I never had a mass air flow issue. Colder range plugs fixed my spark blowout. I never went coil on plug. My tuner recommended I do but he says it's not absolutely necessary. Took saleen 98 3 motors as well to get all dialed in. I'm on my first motor. Since 2018. I agree he knows his stuff. But my tuner, Matt from nextgen is a great mechanic. He wouldn't ever steer me wrong. The reason I smoked alternators was overspending and in my other thread I said the 3.2 in pulley has made my alternator last for 2 years. I replaced it for no good reason anyway but it is not causing my bad idle.

Oh yeah and nations doesn't make an alternator for my application. The 98 cobras have a smaller case alternator. I ordered one from nations didn't fit hit my intake manifold and I called them and no they don't make an alternator for my car. If I had a different intake I could use it but with the stock intake their alternator case is too big.

 

[dan1982]

I never had a mass air flow issue. Colder range plugs fixed my spark blowout. I never went coil on plug. My tuner recommended I do but he says it's not absolutely necessary. Took saleen 98 3 motors as well to get all dialed in. I'm on my first motor. Since 2018. I agree he knows his stuff. But my tuner, Matt from nextgen is a great mechanic. He wouldn't ever steer me wrong. The reason I smoked alternators was overspending and in my other thread I said the 3.2 in pulley has made my alternator last for 2 years. I replaced it for no good reason anyway but it is not causing my bad idle.

well.. he is also at 1200HP. u lose motors at that level from time to time. But if u feel like u dont need a fresh set of eyeballs or have an underlying issue. u dont have to.

 

[freebird50]

well.. he is also at 1200HP. u lose motors at that level from time to time.

I wasn't talking smack. Just saying he went through a lot of trial and error and that's learning. Not good or bad. I'd prefer not to go through 3 motors though sounds expensive as heck. Is that 1200 wheel horsepower?

 

[freebird50]

I wasn't talking smack. Just saying he went through a lot of trial and error and that's learning. Not good or bad. I'd prefer not to go through 3 motors though sounds expensive as heck. Is that 1200 wheel horsepower?

I'd be fine with 800 rwhp. Not trying to one up anyone or be a jerk.

 

[dan1982]

I'd be fine with 800 rwhp. Not trying to one up anyone or be a jerk.

I think 98 saleen puts his car in the street though. He probably knows EXACTLY how fast it is in the 1/4 mile also. I mean.. he is probably pushing the car hard.

 

[98 Saleen Cobra]

Mine wasn't trial and error.. It was a ****ed up ECU for the first 2 built motors I had all burned the same way. The recent motor lasted me 4+yrs and over 120 passes valve float got my last motor. and yea 28 psi will show whats next in terms on what will break.

I'm pretty confused by your alternator post and all the posts in general to be honest.

Based off fueling and mph yes I'm in and around 1200rwhp out of my car through a auto and that was down 6psi from the belt shredding.