I hope that helps. First off, I believe the max psi on a stock 335i is 8.5psi, not up to 11psi.
How much boost does 335i run on?
You see, a stock 335i only runs 8psi of boost pressure – about a half of a bar. Hardly anything by modern turbo standards. It’s quite strong, too – being based on the iron block of the old M54 engine, rather than the newer Magnesium/Aluminum N52, and with forged internals from the factory, it can take a beating.
How much psi does a stock N55 make?
With a reliable twin-scroll turbo, the N55 is capable of making up to roughly 25-26psi. However, for reliability and longevity reasons, we recommend limiting boost to about 20-21psi.
How much boost can stock N54 turbos handle?
N54 Stock Turbos Max Boost Summary Likewise, newer OEM turbos may decide to give out before 20psi. However, if you are concerned about N54 turbo longevity, somewhere in the ballpark of 17-18psi on stock inlets/outlets and 19-20psi on upgraded should be safe for most.
How much HP can a stock 335i handle?
N54 Engine Limits – Simple Answer. The N54 can handle around 600-650whp and 550-600wtq on the stock block and internals.
How much HP is a Stage 2 335i?
Low-Pressure Fuel Pump (LPFP) – Stage 2 (500hp) or Stage 3 (550+hp)
How long do 335i turbos last?
Turbochargers on the BMW N54, for the most part, last around 100,000 miles before they have to be rebuilt or replaced. It isn’t uncommon to hear of cars that have the original turbos still functioning as designed upward of 200,000 miles.
Is 43 psi too high?
Most gauges will have a range of 32-40 PSI (pounds per square inch). If the pressure in your tires is above 40 PSI, they are over-inflated; if it’s below 32 PSI, they are under-inflated. You can also check the sidewall of your tire for the recommended PSI.
How much HP does a Stage 1 tune 335i have?
On the Stage 1 map, that increased to 345 ft lbs of torque, and 284 hp, which is a lot for just a re-flash of the ECU.
How much boost does a 2013 N55 run?
These cars run 7 PSI stock, 9 PSI with MPPK.
Does the N55 have turbo lag?
The twin-scroll design allows the turbocharger to spool slightly faster on the N55, delivering peak torque 100 RPM’s sooner than the N54. Although, this does not lead to a significant difference – the N54 and N55 each produce minimal turbo lag and feel similar to a naturally aspirated V8.
What size is N55 turbo?
The N55 engine had a journal bearing Borg Warner ‘B03’ turbocharger which had a custom version of the smallest Borg Warner EFR billet compressor wheel (62 mm) and custom inducer sizing. For the N55 engine, maximum boost pressure is understood to be around 0.61 bar (8.8 psi).
What size are stock N54 turbos?
VRSF High Flow N54 Inlets Their stock location N54 silicone inlets are no different. These are standard 2″ upgraded inlets with the option for a 1.75″ or 2″ turbo connection.
Why do N54 turbos fail?
The vast majority of turbo failures are caused by oil starvation or oil contamination. The N54 turbos are supplied with engine oil and coolant to keep their high temperatures in check (Figure 1).
What is wastegate duty cycle N54?
The frequency of that pulse/signal is what is typically referred to as wastegate duty cycle (WGDC). This is where PID based boost control comes in and helps the DME regulate the amount of WGDC applied to the solenoids so that Target Load is hit as required.
What size turbo does a 335i have?
Two primary engines powered the 335i – the N54 and N55. Both engines are 3.0L inline-6 turbocharged engines. However, the older N54 engine utilizes twin turbos while the N55 is a twin-scroll single turbo. Despite the differences in turbos most BMW 335i models pump out the same 300 horsepower and 300 lb-ft of torque.
Which 335i is the fastest?
- Motiv Motorsports – 978WHP + 776TQ – E90 335i.
- The Kraken – 920WHP & 865TQ – 2007 335i.
- The Panda – 890WHP + 793TQ – 2008 BMW 335i.
- 939WHP + 862TQ – 2007 BMW 335i Sedan.
Is the 335i faster than the M3?
Even though my tuned 335i was faster it felt nothing like the M3, M3 felt so much faster, maybe its the suspension or the chassis. Not only that it felt faster it also handled much much better and the steering feel is just amazing.
Is Stage 1 or 2 better?
Stage 2 tune provides higher power gains than stage 1 but is more complex since you will have to remap the engine, get additional components, and perform expert-level modifications on the parts. Getting a larger turbo or a hybrid turbo in your vehicle is an example of a stage 2 tune.
How much HP is Stage 3?
Today, the 2021 ROUSH Stage 3 delivers 750 horsepower and 670 lb-ft of torque to deliver a blistering 0-60 mph time of 3.6 seconds.
How much HP can a Stage 1 add?
Most Stage 1 type modifications are typically in the +10-15% power increase over stock. Stage 2: this is typically referred to an engine with a performance cam upgrade as well as the other components within a Stage 1 combination. A typical Stage 2 has generally +20-25% more HP than stock.
What year 335i is the most reliable?
Do turbos shorten engine life?
No. today’s turbochargers are designed to last the lifespan of the vehicle. The truth is, boosted engines require the same amount of maintenance and care that a naturally aspirated engine does.
How much does it cost to replace turbos on BMW 335i?
BMW 335i Turbocharger Assembly Replacement Cost Estimate. The average cost for a BMW 335i turbocharger assembly replacement is between $3,725 and $5,002. Labor costs are estimated between $1,194 and $1,506 while parts are priced between $2,532 and $3,497.
What is the 6 psi rule?
The 6 psi test for 4WD tyres* If the tyres are correctly inflated, the pressure should have increased by around 6 psi above the cold pressure. If the pressure increase is more than 6 psi then your tyres are under inflated.