What else do I need to get into the 12's?

[98TsiAWD]

If you get a 255lph fuel pump you will need a FPR. A 190lph pump can flow enough for a 20g. Just get a 190 pump.

190 pump, 550 injectors, 16g I would say on pump gas you could run 20psi IF you tune it properly. Maybe even 21-22...

 

[Antilles]

first, the regular 255 is fine without a AFPR so long as you do not rewire it. the problem with a 190, is that un-rewired, it flows the same as a re-wired stock pump. not a huge improvement in my opinion.

20 psi on CA 91 octane pump gas is wishfull thinking, especially without being able to monitor knock. i would say 17-18psi until you have the time and money to get the car dyno tuned.

 

[mramc3]

Originally posted by JayHass

Don't sleep on the SE-R when you slap some boost on it.

So you're the infamous Jay H. My friend told me that you are on the nissan threads too. He dropped a 2.0 sentra engine into his 200sx. 50lbs, 4 bar, z32 MAF .63 compressor housing etc. He is upgrading his fuel as well. What more do i need to beat this guy?

Antilles... so a rewire is the equivalnet to 190 fuel pump?

 

[Bohrn]

no its not. There is a chart on Road Race Engineerings site that explains it. Stock pump, stock wire is like 105 or something, rewired properly, is somewhere around 140. A stock wire 190 is like 165 or so, and rewired it is higher. I am just using my memory for the numbers here, but a stock wired Walbro 190 is not the same as a stock pump with a big wire...

 

[98TsiAWD]

Originally posted by Bohrn
no its not. There is a chart on Road Race Engineerings site that explains it. Stock pump, stock wire is like 105 or something, rewired properly, is somewhere around 140. A stock wire 190 is like 165 or so, and rewired it is higher. I am just using my memory for the numbers here, but a stock wired Walbro 190 is not the same as a stock pump with a big wire...

Amen, ignore that post by Antilles

 

[Antilles]

I cant find the source i had on that, but yes. stock is 140lph re-wired.

regarding my post, the rest of the information is correct. you do not need a AFPR for a 255 lph. and as to your previous post, 21-22psi on 91 octane with a 16G is ridiculous.

 

[98TsiAWD]

Originally posted by Antilles
I cant find the source i had on that, but yes. stock is 140lph re-wired.

regarding my post, the rest of the information is correct. you do not need a AFPR for a 255 lph. and as to your previous post, 21-22psi on 91 octane with a 16G is ridiculous.

A FPR IS needed for a 255 pump, a 255 will overrun your stock FPR. There it is right in your post here^^ 140lph, so how is that equal flow to a 190lph pump then?

21-22psi on 93 octane "pump gas" on a 16g is not ridiculous, it is just about the max. I recommended 20psi.

 

[Antilles]

An AFPR is only needed when you either have a 255 high pressure, or standard 255 re-wired.

and the 190 pump most certainly does not flow 190lph at stock voltage.

93 octane pump gas is a different story. the person asking the question lives in california, where the highest available octane gas is 91.

 

[98TsiAWD]

Originally posted by Antilles
An AFPR is only needed when you either have a 255 high pressure, or standard 255 re-wired.

and the 190 pump most certainly does not flow 190lph at stock voltage.

93 octane pump gas is a different story. the person asking the question lives in california, where the highest available octane gas is 91.

Well of course he should rewire the 190 also..

Good point on the California 91 octane. Maybe go down to 19psi then, and MAX 20-21psi. But he will have DSMlink and will be able to see everthing his engine is doing and it will jsut be trial and error to see what boost he can run on the 91 octane But I dont think a 16g is very efficient above 20 psi.

 

[mramc3]

yea so i will be using 91 pump gas in Nazi CA. So if I get a 255 without re-wire.. how much psi can i look to push? will i need a FPR also?

 

[98TsiAWD]

Im telling ya just get a 190 pump...and rewire it, its easy.
Not rewiring your fuel pump is just asking for trouble. It will make your fuel pressure vary up and down. That is VERY bad for high boost numbers. Run a little lean because your voltage goes down on your pump and you could put a hole in a piston.

 

[Phoenix_RsX]

Originally posted by mramc3
so im looking to get a 255 fuel pump like the ones on ebay. with some 550cc's what kind of boost levels can i be at? also with the setup i have now, whats a safe boost level on pump gas?

hmm, considering you west coast guys are on a diet octane wise......I'd have to make a guess and say 15-16. I'm running 17-18 on 93 octane, and I'm doing fine.

 

[mramc3]

with my crnak pulley failing and me reworking my clutch lines.. it looks like i will be having enough money to only get a S AFC. Hopefully this will help me to tune.

 

[OwN1GST]

Get a "LSD" Help your launch.

 

[JayHass]

Originally posted by mramc3


So you're the infamous Jay H.

My friend told me that you are on the nissan threads too.

I havn't posted in a while but yes I do post on occasion

He dropped a 2.0 sentra engine into his 200sx.

Whoa wait a minute. Are you saying he took the 1.6 liter 200sx and dropped a 200sx SE-R driveline into it? Wow...that's a LOT of work, they are really two different cars.

50lbs, 4 bar, z32 MAF .63 compressor housing etc. He is upgrading his fuel as well. What more do i need to beat this guy?

13's? You should now go slap your friend for trying to pull your pants off in public.

That set up is good for 330-340whp before the turbine runs out of flow. (Assuming you mean .63 turbine housing and not compressor)

To put that in perspective, I was making about 325whp when I went 12.4@116mph on pump gas, 14psi and street tires spinning 1st and 2nd really bad on a 2.0 60'.

Alocal friend went 13.1@107mph on 7psi and a T28 with 370 injectors, stock MAF, stock fuel pump etc etc. Just a GTiR DET factory turbo set up bolted on. Another local friend went mid 12's @112mph with the same set up and just 50lb injectors and Z MAF. That was still on the factory T28

The awesome thing about turbocharging the Nissan's is Jim Wolf ECU's take the guess work out of tuning. You just plug and play with dead nuts consistency. The only thing you can really affect hp with is adjusting the base timing via the distributor. If he sets his base to 12-15* the car will be a dog. 15-20* the car will scream. I gained 40whp from a 5* bump in base timing.

SOOO, to beat this cat from a roll is going to be very tough unless you stick a 20G on the car. (You are going to need trap speeds over 116 mph to pull him)

From a stop, you can probably get away with a maxed out 16G and a good launch. But he is going to be hunting you down like an F16.

 

[mramc3]

Originally posted by OwN1GST
Get a "LSD" Help your launch.

I have an AWD. What more do you want??? I can weld the center diff, or even get the lsd for AWD. but thats pretty expensive.