180ls1

iTrader: (4)

i seem to remember another graph from a guy who made the switch with a similar exhaust setup and he gained 6 rwhp on a cam or h/c car. Do you guys really think if there was 20rwhp on the table from going to 1 3/4" to 1 7/8" this is the first everyone if finding out about it? I sure dont, i do agree they should make more power though.

senicalj4579

iTrader: (41)

This is why I was wondering what Y pipe it was each time. Also different dynos? I doubt the whole hp gain was from the headers.

LS-ONE_DAY

Answer...

Idk about you guys going for a catted y but I can wait 6 months to get the set of SS TSP headers and catted y-pipe. Worth the wait.

*02WS6TURK*

iTrader: (13)

Exactly. I hear he gained 60rwh by switching to a SLP elbow and 85mm MAF shortly after this too

evil02z

I'd be willing to bet the 2/3 of your new HP is in the Improved Y-pipe & not the headers. Not saying the 1 7/8 headers didn't give you anything but unless you're planning on going bigger CI or Blower route you may have saved money by just buying a better Y. IMHO

McNasty

iTrader: (1)

I'm not trying to take anything away from the obviously quality pieces that come out of the higher name brands, but face it, not everyone wants to drop that kind of cash right off the bat. Congrats to your gains, but imo, basic setups will do just fine without the 1 7/8's lt's for at least double the price of the pacesetters.

speed_demon24

iTrader: (6)

If the merge is anything like the hooker merge I can believe it.

john563

iTrader: (17)

I whent from hedman 1 5/8 stepped to 1 3/4 to hooker 1 7/8 but also added a larger stall(TCI 3500 stall to circle d 4200) which i hear a stall or larger one will rob "dyno" numbers..well i gained aprox 10rwhp..

I do have the hooker Y pipe though and just dropped off my car to put in a 4in flowmaster merge and 4in dynomax bullit,so ill see if he can redyno

senicalj4579

iTrader: (41)

Whats your other mods?

john563

iTrader: (17)

TSP stage 2.5 5.3 heads,ported fast 90...From the pics I've seen of hooker y pipe they look very contricting..Thinking the better merge will help some..Ive had this merge sitting in y room for a over a year so i said might as well

senicalj4579

iTrader: (41)

Shoot. Well I was hoping your 10hp gain was on a stock car +full exhaust.

john563

iTrader: (17)

to be honest dont think it was even 10rwhp but i did add a larger stall which may have robbed a few,but looking at dif pics here of hookers ory I'd say it very constricting soo decided to add the merge

My hedmans were really old and the fit was crap and soo when it was time to upgrade i whent bibber

senicalj4579

iTrader: (41)

Thats one reason im redueing my exhaust. Replace the pacsetters with bigger stainless and go 4" the rest of the way or do duals. I wanna have that little extra for when I do the cam.

BaddillaK

iTrader: (13)

I can see a small gain from primary size and a nice gain from a better collector design and merge.

this is **** for power


Patrick Gs y pipe on his TA you know it made power.

McNasty

iTrader: (1)

Link to Pat G's y pipe thread please?

Darkman

iTrader: (2)

https://ls1tech.com/forums/generatio...heads-cam.html

01ssreda4

iTrader: (96)

Me want 1 7/8 from TSP........And me gonna get. When they come in

427LS7HCI

The bulk of the OPs power and TQ was picked up from the change in merges.

KreeperKamaroSS

TSP, do you guys plan on making your rumbler x true duals in stainless too?

mike c.

iTrader: (1)

Before everyone runs out and spends cash my boy went from 1 3/4 to 1 7/8 and his gain was very little mid and up top. lost little down low but over all he gained like 5hp. He was not happy with the money spent and he went from a kook header to a kook header. I told him of how pat g did his y pipe and i'm sure he'll try that.