What pulley should I upgrade too?

[CarTramrod]

Upgrading my fuel system to a fore innovations triple 285 pump set up so I can run e85 and drop the pulley size. What is a safe amount of boost/pulley size for my set up? Currently i make 10 psi on the 3.875 pulley. Car is a 2018 mustang gt pp1 with a Ben calimers stage 3 mt82-d4, Gen 6 whipple stage 2 3.0 liter, mantic clutch, qa1 carbon fiber drive shaft, geforce renegade axles, gt350 primary timing chains, boss 302 timing chain tensioners and guides, mmr hd secondary timing chains, boundry billet oil pump gears, boundry billet crank sprocket, crank support, catless long tube headers, id1050x injectors, a bunch of bmr rear suspension components.

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[engineermike]

Did you already buy the fuel system?

 

[CarTramrod]

Did you already buy the fuel system?

Yes

 

[engineermike]

Yes

That’s too bad. There are much better and simpler options available now.

A dw400 with a bap will actually support e85 down to the 3.00” pulley, if tuned right. A kpm1500 or gt500 module will go even lower. I’d say that yours, the kpm, or the gt500 module will support more fuel than a 6-rib belt can.

I’m currently running a 3” pulley on the gt500 fuel module and it’s holding 85+ psi fuel pressure at 7600 rpm, so it supplies well over what I can use.

My friend is running a bap/dw400 on a 3” pulley and just snapped a gates “black” belt. It’s been posted that some are going to the 2.75 pulley on a 6-rib but I’m not sure how this is holding up long term. My advice would be if you’re going below 3.25” on a 6-rib then keep a spare belt and tools in the car, but I’m basing that on one data point.

 

[CarTramrod]

That’s too bad. There are much better and simpler options available now.

A dw400 with a bap will actually support e85 down to the 3.00” pulley, if tuned right. A kpm1500 or gt500 module will go even lower. I’d say that yours, the kpm, or the gt500 module will support more fuel than a 6-rib belt can.

I’m currently running a 3” pulley on the gt500 fuel module and it’s holding 85+ psi fuel pressure at 7600 rpm, so it supplies well over what I can use.

My friend is running a bap/dw400 on a 3” pulley and just snapped a gates “black” belt. It’s been posted that some are going to the 2.75 pulley on a 6-rib but I’m not sure how this is holding up long term. My advice would be if you’re going below 3.25” on a 6-rib then keep a spare belt and tools in the car, but I’m basing that on one data point.

I currently have the dw400 pump that came with my whipple but i'm not wanting to use a bap also lund will not tune any car with a dw fuel pump due to lack of pump reliability. I'm doing what my mechanic recommends and says is the best. And I plan on keeping an extra belt in my car at all times.

 

[engineermike]

I currently have the dw400 pump that came with my whipple but i'm not wanting to use a bap also lund will not tune any car with a dw fuel pump due to lack of pump reliability.

Lund has some personal beef with DW which is why he steers people away from them. The dw400 is a very reliable pump, even at 20 volts. We ran one at 22 volts for minutes at a time in water and it performed flawlessly, not to mention years of use at 18-20 volts in both e85 and gasoline in cars.

I'm doing what my mechanic recommends and says is the best.

Sounds like you need to consult your tuner and mechanic about what pulley to run.

 

[DougS550]

That’s too bad. There are much better and simpler options available now.

A dw400 with a bap will actually support e85 down to the 3.00” pulley, if tuned right. A kpm1500 or gt500 module will go even lower. I’d say that yours, the kpm, or the gt500 module will support more fuel than a 6-rib belt can.

I’m currently running a 3” pulley on the gt500 fuel module and it’s holding 85+ psi fuel pressure at 7600 rpm, so it supplies well over what I can use.

My friend is running a bap/dw400 on a 3” pulley and just snapped a gates “black” belt. It’s been posted that some are going to the 2.75 pulley on a 6-rib but I’m not sure how this is holding up long term. My advice would be if you’re going below 3.25” on a 6-rib then keep a spare belt and tools in the car, but I’m basing that on one data point.

I'm spinning my 3.0 at around 17,400rpm and yet to see any black "belt slip" dust yet on my 6 rib. But, I am going to see if I can procure or make 8 rib pulleys so I can run a 8 rib belt with my 8 rib IW damper. It would give me a little piece of mind that's for sure. Good luck OP

 

[Zrussian13]

FYI I spoke to lund after the topic of them not tuning dw parts came up in another thread and they said they've seen lots of quality control issues with dw in recent years so they stopped supporting their products. They think it's due to manufacturing changes or qc issues.

I've started working with a new tuner who is willing to tune a dw400+ bap on E. My e30 tune rips hard compared to my KS pump gas lund tune. Plus I didn't have to desensitize my knocks to prevent false knock on the new tune. Still trying to dial in cruising without any surging but we are getting close. Lund's drivability was spot on from the beginning but never let up on my false knock being mechanical related. Now I know they were wrong on that and my fuel system handling E.

 

[CarTramrod]

That’s too bad. There are much better and simpler options available now.

A dw400 with a bap will actually support e85 down to the 3.00” pulley, if tuned right. A kpm1500 or gt500 module will go even lower. I’d say that yours, the kpm, or the gt500 module will support more fuel than a 6-rib belt can.

I’m currently running a 3” pulley on the gt500 fuel module and it’s holding 85+ psi fuel pressure at 7600 rpm, so it supplies well over what I can use.

My friend is running a bap/dw400 on a 3” pulley and just snapped a gates “black” belt. It’s been posted that some are going to the 2.75 pulley on a 6-rib but I’m not sure how this is holding up long term. My advice would be if you’re going below 3.25” on a 6-rib then keep a spare belt and tools in the car, but I’m basing that on one data point.

2.75 is showing 20 lbs of boost based on whipples chart. My motor isn't a built motor so I think that is not a realistic amount. I figured a 3.25 pulley would be the max and still probably not super safe because that is showing 16 lbs of boost.

 

[HKusp]

engineermike is running a Gen5 Whipple car and a Roush F150 and has done a lot of research in this area. He KNOWS what he is talking about.

 

[Zrussian13]

engineermike is running a Gen5 Whipple car and a Roush F150 and has done a lot of research in this area. He KNOWS what he is talking about.

Mike also spends a shit ton of time dialing his tune in. Not sure I'd push it to the limit on most mainstream tuners stuff.

 

[LethalSteveG]

With E85 on a return system, I've seen people make 850 with a 3.75 pulley on the Gen 5. On stock internals I don't normally recommend over this too.

When you do decide though, we offer Whipple and Griptech for pulleys so if we can help, let us know!
https://www.lethalperformance.com/s...gt/2018-2023-mustang-gt/superchargers/pulleys

 

[HKusp]

Mike also spends a shit ton of time dialing his tune in. Not sure I'd push it to the limit on most mainstream tuners stuff.

This is true. I wouldn't run Lund if they paid me to. That being said any quality tuner should be able to dial you in, especially with the knock protection afforded by E85, on almost any pulley with this platform. There are all kinds of ways to get close to, but not over, the limit of a stock internals coyote. This PCM is incredibly complex and capable.

 

[J17GT]

Fuel system chatter aside, I've gone as far as the 3.5" pulley ~14psi on my gen2 car... Have not had it on a dyno to have any idea of the power. Trapped 136.54mph rowing the gears at 4125lbs total weight. Been tempted to turn it up another pound... Seems 14-15psi is the usual "safe limit" but I think you can get away with a bit more on a gen3.

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