So what kind of power difference will I see by going to the 14mm H&R pump? Does just the different pump make say 75hp over what the stock pump makes or what kind of difference am I looking at?

I know on a stock pump and Bosch 370's its possible to hit 320whp but someone told me with the 14mm H&R pump and 370's I could hit over 400whp. Is this true? This is asuming air is not an issue because I will have plenty of turbo. Or turbo's lol.

 

The 14mm pump probably wont last out of your driveway with the 370s.
and neither will the turbo.

 

Can you elaberate some?????

 

I plan on getting compound turbo's, exhaust header, head studs, ect.

My goal is only a total of about 450-500whp and I dont believe in "over buying" injectors. I want to get injectors that will meet my goal and burn all the fuel, I dont want to make 500whp and still be smoking like a frieght train, I want 500whp and clean clear exhaust if that makes sense.

Why would the 14mm H&R not last and what is the power gain potential?

 

I have heard of 14mm pump reliability issues but then again i have no experience with them.

 

No one knows for certain on the hp gain of a 14mm head. KTA went from 486hp with a 12mm head to 627hp with the 14mm head with some tuning and god knows what else. Plus theres alot of other variables that go with the 14mm head, fuel system, injectors, etc....however i wouldn't run a 14mm head with injectors smaller then 6x.016's because anything smaller wont supply enough flow to keep the head cool and happy.

If you only want 450-500hp, you dont need a 14mm head anyways. A 14mm head is only needed for the guys who are wanting to push the 500+hp mark and arent conserened about reliability.