How much HP can a stock EJ25 block handle?
300 whp: The EJ20/EJ25 engines can handle 300 whp maximum with stock internals with no further modifications other than a proper fuel management tune.
Is a stock EJ25 reliable?
As is the case with most performance engines, the Subaru EJ25 is nowhere near perfect and has its fair share of issues. With all of its imperfections studied and properly sorted out however, the EJ25 can prove to be a reliable engine to enjoy performance driving with.
How long do IAG blocks last?
there are multiple examples of iag blocks lasting over 100k miles. IAG will install a new SB fro under 8K – the issue is who would do that.
How much HP can you get out of an STI?
They’re still based on the previous-generation Impreza models. If a new report from Forbes is accurate, however, that might finally be changing, thanks to a new engine being developed for the next STI capable of delivering 400 horsepower and 361 lb-ft of torque.
How much horsepower does an EJ25 have?
When Subaru pulled the covers off the S209 this week, we learned that the old EJ25 2.5-liter lurked under the hood. Yes, the same EJ25 that’s powered the WRX STI since 2004. In the S209, power rises from 305 hp to 341 thanks to a new turbocharger running higher boost pressure, plus forged pistons and connecting rods.
Is the EJ25 turbo reliable?
The engine will last anywhere from 250000 miles to a very impressive 300000 miles. Subaru engines have been known for their durability, and the EJ25 is proof of that. You will have a memorable driving experience with the engine as long as you don’t run into any issues.
Are IAG Motors Good?
IAG is the largest and most technical Subaru engine builder on the market. This allows them to make fine adjustments as weak points are found. Even though all IAG engine are top notch, each new one is better than the one before. This ensures that you are getting the best motor for your money.
How do you break in an IAG block?
IAG Staged Block Break-In
- Change with Motul break-in oil at 50 miles, and replace oil filter and crush washer.
- Change oil with Motul break-in oil at 500 miles on your new engine, and replace oil filter and crush washer.
- Change oil with Motul break-in oil at 1500 miles and replace oil filter and crush washer.
How much HP can stock STI axles handle?
The CV’s can take 625-650 whp, but the axles themselves can only take 400-425.
Is the FA more reliable than the EJ?
While the EJ motors remain sensitive to knock conditions and tuners do everything in their power to prevent detonation, the FA motors are even more sensitive and the challenges of direct injection have made avoiding knock much harder.