Ok my setup is as followed

unopened healthy jdm b18c gsr
custom mini ramhorn
precision 5454
tial 38mm wg
tial 44mm bov
2.5" charge pipes
2.5" downpipe to 2.5" testpipe to 2.25" thermal catback
blox 68mm tb
skunk2 intake manifold
nlr ams 500 boost controller
aem fuel rail
aem fpr
walbro 255
precision 1000cc injectors
catch can


it made 290 @9lbs with an inline pro stainless steel manifold
now it just made 310 @9lbs and a 20tq increase with the mini ramhorn, my tuners gonna go to 10lbs to see where that takes us. it deff still wont be anywhere near 350

im pretty ****in pissed because i see people making 350 with worse setups than me. any ideas were i went wrong? thanks

 

Those numbers don't seem bad, if your set on 350 turn up the boost until you get there. What kind of dyno were you on? Take it to the strip and see what you trap, that's what really counts

 

I have a Ramhorn and Garrett t3/t4 57 trim 63 ar with itr cams in my gsr and I made 345@10lbs

Maybe it's your turbo

 

that down pipe and exhaust are not helping

 

3'' or bigger on turbo setup. what dyno you tuning on? How hot is it? lots of factors. Like Dc4 said just turn up the boost. Also cfm's make more of a difference in turbos, not boost pressure, for making more power.

 

I bet that 2.25" section of exhaust isnt helping.

 

its on a dynojet
shop temps were 109*
ive talked to multiple people who have been building b series for a long time and they said 350 would be pushing the 2.25 exhaust. so i dont think thats the issue but i could be wrong

with 290whp on the old manifold it went 13.2 @ 110 blowing the street tires off in 1st and 2nd

i dont just want to crank the boost to 12 pounds, keep in mind cylinder pressure

 

Use synthetic vtec fluid.



Also... 3" exhaust would allow that bad boy to breath better.

 

Those numbers arent bad for that turbo at 10psi. You have double the stock HP... Sheesh.

 

Just like others have stated the entire exhaust from downpipe all the way back needs to go 3 inch for best efficiency and power.

After exhaust upgrade you can up the boost to about 12 psi, there will be less backpressure with the 3 inch exhaust which will allow you to up the boost pressure a bit.

Those numbers are good for the setup and boost pressure you are running. Stop pulling your hair out.

Cheers..

 

I made that power on that exhaust size 10 years ago.. It doesn't help, but its not his main issue. more than likely timing control.

 

Yeah the 2.5 inch exhaust is not whats breaking the bank here you can get to 400whp on a 2.5 inch. Increase the boost a bit and have it retuned. 8-10 psi and not making 350whp is not unheard of I would be impressed if you where able to get 350 on 8-10 psi.

 

A bit redundant, however just like everyone is saying you are making very respectable power with the current turbo. Would also recommend going with 2.5" or better yet 3" exhaust piping to help you out a bit as well turn up the boost with a re-tune to hit your power goals.

 

Ya and I also used missing links and fmu setups and watch saved by the bell 10 years ago, ok I still watch saved by the bell ; ) I could see keeping a 2.5 exhaust but a 2.25 has to be killing power

 

What?!? You didn't think Mr. Belding wasn't the coolest cat on the planet?!?

 

I'd open up the exhaust, retune, and be happy with wher your at on the stock headbolts. ARP's would be good insurance.

 

the moneys been spent the cars been on the dyno 4 times

time for pistons rods 3" exhaust and arp headstuds so i can max this turbo out

 

Yeah I would not push it much more on stock head bolts. If you are planning to build the motor then save up for a larger 3 inch down pipe, test pipe and exhaust up the boost and retune once you have everything together for the built motor. For now just drive it and be happy with it the way it is.