rxmiles

iTrader: (11)

Well, I have this sweet downpipe collecting dust and I have not wanted to install it yet, due to fear of the overboost demon...

I guess I can circumvent this by using a boost controller, but is this really necessary?

eage8

iTrader: (9)

boost controllers only raise boost... they can't lower it.

what's the rest of the exhaust/intake like?

rxmiles

iTrader: (11)

The exhaust and intake are 100% stock.


Dam, I forgot about that, I guess I can port the wastegate to help prevent boot spikes.

archaphil

iTrader: (1)

pro-tip: Spray paint the gate flapper so you can see how much area you can safely port.

7speed

You'll creep. Free-flowing intake and DP is a nightmare on the stock turbo. My waste gate is ported and still can't handle it. I'd almost rather take the stock unit without worrying of spiking

RotaryEvolution

iTrader: (30)

just a downpipe won't cause much creep, deleting the cat will.

7speed

^ corrected. Ignore what I said.

archaphil

iTrader: (1)

interesting read as I was curious: https://www.rx7club.com/2nd-generati...l-dump-921634/

Ben, you even made an appearance in this thread haha.

I have been concerned about creep myself, and am in a similar situation where I have very little vested into my stock setup, and have highly considered the praised t04b hybrid (bnr) vs spending the "big bucks" on a turblown t3 manifold and gt35r setup.

I notice though that alot of people running a full 3" with HF cat and ported wastegate on the S5 version near stockish levels do not need to worry as much about it?

eage8

iTrader: (9)

I've been fighting boost creep on my S5 BNR stage 2 (ported wastegate) with a 3" intake and 3" racingbeat exhaust forever...

I'm finally hoping to solve it with a divorced wastegate downpipe:


Much easier than the above thread^

I have another custom divorced wastegate downpipe I bought off a forum member for sale on the forum if anyone is interested...

archaphil

iTrader: (1)

more food for thought in this thread:

https://www.rx7club.com/2nd-generati...-turbo-330481/

I just like an external wastegate.