[ElBimmer]

Current setup is:
FMIC
Catless DPs
Inlets
Intake
I will add a custom tune, and methanol because i dont have access to E85

Curious if this setup could do 500 whp on pump gas 93 and is it possible on stock lpfp?

[Dave92N54]

You're going to be extremely pressed to crack 500whp on stock turbos, they're not going to last long at that power. I am unsure if you would with what you're listing, but I don't know much about meth. ~470-480whp is much more obtainable.

[ElBimmer]

Originally Posted by Dave92N54

You're going to be extremely pressed to crack 500whp on stock turbos, they're not going to last long at that power. I am unsure if you would with what you're listing, but I don't know much about meth. ~470-480whp is much more obtainable.

Looking for an excuse to upgrade turbos So would be interesting to see what the stock ones could do.

Do you know the limit of stock lpfp on pump gas?

[Dave92N54]

Originally Posted by ElBimmer

Looking for an excuse to upgrade turbos So would be interesting to see what the stock ones could do.

Do you know the limit of stock lpfp on pump gas?

I do not but I don't believe you'll encounter it's limits with 93 on stock turbos

[Alkapwn]

Keep in mind that a catastrophic failure of turbos can result in engine demage as well. Engines don't like ingesting bits of compressor blades.

[iqraceworks]

I will echo what everyone else is saying....500whp on 93 it tough enough with bigger turbos, on stock turbos it's just about impossible unless you have some crazy tune dialed in just for a max effort dyno pull.

I should be right at 500whp with my RB Two turbos at 25psi boost....

You really need more octane to get them motors to wake up....with an E40 mix those same turbos are probably 575whp at 27psi.

I'd be shocked if you could even get 460-475hp out of the stockers, even with a custom tune. They just don't flow enough air....they run out of steam around 5,500rpms and just fall on their face.

[iqraceworks]

Originally Posted by ElBimmer

Looking for an excuse to upgrade turbos So would be interesting to see what the stock ones could do.

Do you know the limit of stock lpfp on pump gas?

You aren't going to max out the stock LPFP on 93 with stock turbos. On an E40 mix you are going to be right at the limit....possibly over the limit with a custom tune running a bunch of boost.

[dyllan12]

I guarantee if you was to dyno with those mods.. You'll see from 390-430WHP max. on pump gas


And above 420 whp is you being lucky.. Most i've seen people make is between 380-400 to the wheel.

If you don't want your heart broken. I wouldn't dyno😂.


With MHD stage 2+ thou, it's still fast asf, especially if your new to tuning, because twins turbos produce lots of torque.

You'll get about 425 Torque average.



So hopping from 270-290 whp stock to 380-420 whp and torque. Is a HUGE difference. I'll be first to tell you my n54 scared the hell out of me after I jump from stock to MhD most aggressive tune.

[dyllan12]

Originally Posted by ElBimmer

Looking for an excuse to upgrade turbos So would be interesting to see what the stock ones could do.

Do you know the limit of stock lpfp on pump gas?

Your fine, you wouldn't max your LPFP on stock turbo pump gas

[Sgop335]

All posters got it.
Perhaps one way the stock lpfp could be maxed out on 93 is if afrs are super rich to improve timing. that will still not give 500.
Heres why, stock turbos. They just cannot provide the airflow. I attached the td03 curve. X axis is m3/s which you can easily convert to mass flow kg/s by multiplying 1.2 for standard air.
For 500hp roughly one may need 50lb/min, 25 per turbo.
25lb/min is .189kg/s, which is .16 m3/s all the way to the right in the graph. That is way beyond the capability of the td03 spinning like crazy...

[ElBimmer]

Originally Posted by Sgop335

All posters got it.
Perhaps one way the stock lpfp could be maxed out on 93 is if afrs are super rich to improve timing. that will still not give 500.
Heres why, stock turbos. They just cannot provide the airflow. I attached the td03 curve. X axis is m3/s which you can easily convert to mass flow kg/s by multiplying 1.2 for standard air.
For 500hp roughly one may need 50lb/min, 25 per turbo.
25lb/min is .189kg/s, which is .16 m3/s all the way to the right in the graph. That is way beyond the capability of the td03 spinning like crazy...

So even if i added meth to increase octane, the stock turbos would be the restricting component for me to reach 500, simply because they cant spin fast enough?

[ElBimmer]

Originally Posted by dyllan12

I guarantee if you was to dyno with those mods.. You'll see from 390-430WHP max. on pump gas


And above 420 whp is you being lucky.. Most i've seen people make is between 380-400 to the wheel.

If you don't want your heart broken. I wouldn't dyno😂.


With MHD stage 2+ thou, it's still fast asf, especially if your new to tuning, because twins turbos produce lots of torque.

You'll get about 425 Torque average.



So hopping from 270-290 whp stock to 380-420 whp and torque. Is a HUGE difference. I'll be first to tell you my n54 scared the hell out of me after I jump from stock to MhD most aggressive tune.

I got MHD Stage 2+ now. Big difference from stock tune! But now i am used to it, and got hungry for more

[iqraceworks]

Originally Posted by ElBimmer

So even if i added meth to increase octane, the stock turbos would be the restricting component for me to reach 500, simply because they cant spin fast enough?

Meth would let you run a little more timing, maybe a little more boost. You could probably make a little more torque down low , but the turbos are still going to fall on their face at around 5,500rpms and just stop pulling. My RB TWO's I have pull up to 7,000rpms pretty hard....even though the torque through the pull is not much more than the stock turbos, that added rpm really bumps up the HP.

HP = TQ x RPM / 5252

.....so, just as an example......

450tq x 5000rpm / 5252 = 428hp

450tq x 6000 / 5252 = 514hp

The fact that you can make the same amount of torque for another 1,000rpms gets you almost another 100hp.

All that being said......hitting the stock turbos with 20+psi boost is probably going to kill them sooner than later, so you will be in the market for some bigger turbos soon anyways.

[mike@x-ph.com]

I do not recommend pushing the turbos to this limit, it won't last long and you are risking damaging other components in case of a catastrophic failure.

If you want more power, upgrade your turbos

[Saif2018]

Originally Posted by ElBimmer

So even if i added meth to increase octane, the stock turbos would be the restricting component for me to reach 500, simply because they cant spin fast enough?

You might reach 500hp if you want to push the living daylights out of the stock turbos on a custom map and kill them asap. Stock turbos can't hold boost up top, if you ever had a look at a Datalog of a custom tuned stock turbo, no matter what you do, they just can't hold boost past 5k,

Why don't you save up for upgraded twins from RB 2 or Pure stage 2's as they will give you 500hp easily, turbos will last longer as they aren't stressed to the limit?

[syntax]

Originally Posted by ElBimmer

Current setup is:
FMIC
Catless DPs
Inlets
Intake
I will add a custom tune, and methanol because i dont have access to E85

Curious if this setup could do 500 whp on pump gas 93 and is it possible on stock lpfp?

You'll need an upgraded LPFP and meth injection with a custom tune. You'll need need a 3.5 tmap sensor for getting over 19 psi but you realistically will be limited to 450-480whp and be at the reliability limits of the turbos. Instead of hp goals, try to get the fastest 1/4 on stock turbos as its a bigger flex. Do some weight reduction after and send her. Having an 11.2 on stock turbos is faster than some dudes on upgraded twins. Power isn't everything. Weight, trans tune, etc.

[1Bad335turbopsi]

Originally Posted by ElBimmer

So even if i added meth to increase octane, the stock turbos would be the restricting component for me to reach 500, simply because they cant spin fast enough?

Just add a 50 h.p. shot of nitrous.....