antnicuk

Anyone use the big XS Power intercooler, the 24 inch wide by 4" thick one?
if so what sort of power do you get with it?

antnicuk

anyone?

i think mine maybe causing me a restriction

EjCabrera

iTrader: (4)

im using one. i currently have 318rwhp w/ bnr stage 3s. had to spray and pour water to cool it down during tuning. it's an alright intercooler imo but i would like to upgrade to a v-mount when the time comes.

XxMerlinxX

iTrader: (2)

What's your boost set at? I've seen stock twins put out more hp than that.

antnicuk

mine cools ok but i seem to be hitting a 350rwhp wall. The whole engine/turbo set up has changed except for the i/c but i still see the same problem, the tuner thinks its the i/c causing a restriction, i seem to have a 3-4 psi pressure drop from turbo to plenum.

Another guy at the dyno had the same i/c and when he changed it he made 40 rwhp more.

fritts

iTrader: (5)

I seriously doubt there is that much difference in pressure loss based on the IC. The design is no different that many other SMIC's out there now. I will be putting some data up here today on efficiency of the XS Power IC as I have fitted GM AIT's on the inlet and outlet of mine to help define how good or bad the IC does. My next step was to check the total restriction and if I have time this weekend I will try and do that. If they were checking from the compressor out to the vacuum ports on the UIM at the LIM I could understand 3-4 psi total but a lot of that would not be coming from the IC.

No_Rotor_RX7

this is the greddy i/c kit for the fc, but i the core has been replaced with an XS power unit 4" thick

nothing but happy with the results. air temps seriously stay around ambient under boost and pushing weeelllll over 400rwhp

gearhead-42

I run an XS Power front mount in my S13...

Bone stock SR20, stock T25 turbo @ 13psi, no fuel management, and custom piping, I made 219hp and 225TQ to the wheels. We left the fan off on one run and it dropped hp by 7 peak. So I guess it works

Dunno if that helps, but it's another data point...

antnicuk

[QUOTE=No_Rotor_RX7;7022458
this is the greddy i/c kit for the fc, but i the core has been replaced with an XS power unit 4" thick

nothing but happy with the results. air temps seriously stay around ambient under boost and pushing weeelllll over 400rwhp[/QUOTE]

400rwhp is good, what boost is that running?


I had a series 4 engine with a GT35/40 running a 0.96 hot side, mildish porting, 3inch exhaust with a middle silencer, i made 350 rwhp at 1 bar at 7krpm,

i then built a new series 5 engine and changed the hotside on the turbo to a 1.15, made huge exhaust and inlet ports, and enlarged the runners a massive amount, the exhaust is now 3.5 inch with no mid silencer. Intercooler pipework is the same as before at 3 inch with an FD UIM and greddy elbow. Compression is very good and the car feels really strong and i get 350 rwhp a Boost is holding strong at 1 bar right the way through til 7500 rpm.gain but at 5.5k rpm but it goes flat and tails off early, torque is up a little. Everything is different but i cant seem to get past that power, the only thing thats the same is the intercooler!


i want to see 400 rwhp, which is only 50 more and should be possible with the extra mods to the engine. I didnt bother running more boost on the rollers as some thing obviously isnt right if the power is dying off that early.


The black run is the recent one, the pink one is the old engine

antnicuk

any ideas?

Boostmaniac

Timing?

antnicuk

I asked the tuner about timing and he said that he used the same amount of timing as he would in any other rx7 that he tuned, he tunes nothing but rx7's although mostly FD's but still the Apexi Power FC which i am running. Surely timing shouldnt be that much different from a TII to a FD engine. Especially as my ports are very large and the same size and shape as a ported FD.

EjCabrera

iTrader: (4)

boost at 12psi was like 309 then put to 14psi it only rose to 318. steve kan tuned my car so im pretty sure he knows what he was doing. he told me that my hiflow cat was clogged and it was.

9Sec7

not many people know that xs power is actually an alright brand id say get it its one of the best bang for the buck brands out there.

NeoTuri

iTrader: (2)

I installed one, and I'm betting the dyno will see 320~340 whp after I get the tip-in where I want it. I just don't want to waste $100 and a day off on a tuning session when I'm just going to go back later.

Stock motor, stock turbo.

Barry Bordes

What ducting to the intercooler are you running? Any pictures? What temps are you seeing coompared to ambient.
Barry

RETed

350 on an MD is like 400 on a DynoJet.
400 @ 15 psi is about right for that turbo.
Your "restriction" is the turbo itself.
It's not the intercooler.


-Ted