Increased bhp with intercooler

[Patrick_Devlin]

Not sure if I'm being a bit thick, but is this true... I read this here (http://www.gnttype.org/techarea/turbo/intercooler.html) about intercooler efficiency and what not...

On an 80 to 85 deg day I got a WOT temperature of 140 deg, for a 55 to 60 deg approach. That tells me that I need more intercooler. If I can get the temperature down to 100 deg, the air density in the intake manifold goes up by 7%, so I should flow 7% more air and presumably make 7% more hp. On a 350 hp engine that is 25 hp increase. On a 450 hp engine that's a 30 hp increase

:conf:

[Ian C]

Christ, you're using degF not degC, I nearly shat myself then...

You'll flow denser air in the same volume, and your ECU should compensate for the cooler airflow by adding more fuel = more power. Cooler intake charge is A Good Thing, but I couldn't tell you how much extra wellie you'll get...

-Ian

[Patrick_Devlin]

Its probably a bloody american site... which may explain the hp increase claims. Maybe the max power boys should put an "intercooler" sticker on their novas...

:)

[Chris Wilson]

Cooler and hence denser intake air is "free" bhp, and to be striven for in every way. A better I/c will give more power.

[Patrick_Devlin]

Thats why I'm buying one of yours Chris... :) Added to that is that mine has joined the ranks of the "JB 20-a-day" intercooler club.

So in theory once a new, working IC is fitted I should see an increase in performance if the old one is knackered?

[Chris Wilson]

Originally posted by Patrick_Devlin
Thats why I'm buying one of yours Chris... :) Added to that is that mine has joined the ranks of the "JB 20-a-day" intercooler club.

So in theory once a new, working IC is fitted I should see an increase in performance if the old one is knackered?

Absolutely, in fact I forsee a slew of blown modded engines soon, as some I/Cs are no longer functional in any real sense, they are so knackered.

[400BHP]

Chris,

Your smic's, can 2 of them be fitted, one either side?

A local 'supra' garage said to me that he has fitted a standard one on the other side upside down but this to mee sounds like a wee bit of jackanory, what do you think??

[Wolf]

Ok, I'm confused, as a very reputable company who are a trader on this site told me I would get no more power from an IC just would loose less in summer when temps went up.

But with the SMIC I got off Chris a few weeks back that car feels much quicker than it did even in winter with my old and VERY shagged stock SMIC. Not done a dyno run since having the new IC on so only going by seat of the pants.

So have I got more power with this SMIC?

[Chris Wilson]

Originally posted by Wolf
Ok, I'm confused, as a very reputable company who are a trader on this site told me I would get no more power from an IC just would loose less in summer when temps went up.

But with the SMIC I got off Chris a few weeks back that car feels much quicker than it did even in winter with my old and VERY shagged stock SMIC. Not done a dyno run since having the new IC on so only going by seat of the pants.

So have I got more power with this SMIC?

If intercooler "A" gives more air temp drop for a similar flow restriction the engine it's behind will make more power than intercooler "B" that drops air intake temps less, or has a lot more internal restriction (or both...).

[Justin]

What I reckon would be best for members here and Chris's sales figures would be some dyno runs with the same car on the same day with same ambient temps etc.

A couple of runs with the old stock SMIC and then a couple of runs with one of Chris's new ones.

If the results were good and there for all to see then it would sell itself. I would definitely buy one if it showed a 15-20 bhp gain.

You can use my car to test with if you want Chris :)

[Patrick_Devlin]

What is evident is this.

My car's IC is sh*gged. It is therefore not working at all essentially. So, the air coming out of it into the intake manifold is the same as going into the IC. Therefore no reduction in temp...

If I fit a working IC (be it CW's or stock Toyota) I will have an IC that reduces the air temp etc... Therefore I should see an improvement in power.

What your asking about is the difference between CW's and a stock one that is working. I'm getting CW's cos its a very viable alternative to stock and I dont want an FMIC...

It'd still be good to check them out though, no arguement there!!!

;)

[Alex]

Originally posted by Patrick_Devlin


What your asking about is the difference between CW's and a stock one that is working. I'm getting CW's cos its a very viable alternative to stock and I dont want an FMIC...


And a damn sight cheaper than stock WITHOUT upsetting your insurance company!

Good Choice Patrick

[Kevin Huntley]

Originally posted by Wolf
Ok, I'm confused, as a very reputable company who are a trader on this site told me I would get no more power from an IC just would loose less in summer when temps went up.


I have got to say my car seams a lot faster since I had the water injection and Greddy 3 row fitted, infact it flies! It may have something to do with uping the boost to a safe 1.3 bar:)

IMHO I would also say I now don't notice a significant power drop when running the car on a warm day before I had the FMIC and water injection the car was like Jeckle and Hide "fast" on a cold day and "slugish" on a warm day. It does really seam to make a difference to the performance! :flame Dev

[Patrick_Devlin]

Originally posted by Alex Holdroyd
And a damn sight cheaper than stock WITHOUT upsetting your insurance company!

Good Choice Patrick


Blasted insurance. I've got that to come at the end of the month - as well as two new tyres last week and a service... I'm so skint!!!

:(

[Chris Wilson]

Originally posted by Justin
What I reckon would be best for members here and Chris's sales figures would be some dyno runs with the same car on the same day with same ambient temps etc.

A couple of runs with the old stock SMIC and then a couple of runs with one of Chris's new ones.

If the results were good and there for all to see then it would sell itself. I would definitely buy one if it showed a 15-20 bhp gain.

You can use my car to test with if you want Chris :)

A dyno as in rolling road is a poor choice for testing something that reles on forward motion air flow to work, would be better to test on the road under controlled conditions, however, TRULY accurate testing of IC's is mega expensive and time consuming. As I am selling them as fast as I can make them I think I'll leave the staus quo alone :innocent:

Cheaper than OE, better made and a more modern and IMO efficient core, what more d'ya want? ;)

[Paul Laing]

Kevin, your cars too fast!!!!!!

Paul