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Gonna bump this to the top. I'm curious too. There seems to be a lot of talk about the PHP but not any actual dyno info or first hand info about the HCI.

I called them Friday and talked for a while, they were very helpful. I would still like some actual, first hand experiences though, and hopefully on a N/A car. I'm wondering what the tq loss is like, and exactly what kind of power was made.
 

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Bump again.

I'm considering HCI or PHP also. Is 310 rwhp with my mods possible?
 

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Should be. HCI was telling me that they were seeing 20rwhp on even stock Cobras. Modded ones were getting 22-35rwhp. Now I always am skeptical of claims like that, but even half of that would put you right about 300rwhp.

The tq loss down low would suck, but even if it was 20rwtq that would still put me at the stock rwtq level. On a stock car, losing that much would suck.
 

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Black96Cobra said:
Gonna bump this to the top. I'm curious too. There seems to be a lot of talk about the PHP but not any actual dyno info or first hand info about the HCI.

I called them Friday and talked for a while, they were very helpful. I would still like some actual, first hand experiences though, and hopefully on a N/A car. I'm wondering what the tq loss is like, and exactly what kind of power was made.
Here are some numbers for a NA engine with an HCI intake and typical bolt-ons (LT's, cat back, pulleys, MAF meter, etc). For comparison, I've included my NA numbers with stock intake and typical bolt-on mods(stock IMRC's, Accufab TB, 90mm Lightning MAF meter, Custom TB-to-MAF pipe, K&N Filter, U/D pulleys, BBK LT's, Catted X-pipe, 3" cat back, IRS w/4.10's)

RPM HCI Blown's NA
2900 135 143
3000 140 149
3100 145 155
3200 150 160
3300 156 165
3400 161 170
3500 165 175
3600 168 181
3700 175 189
3800 180 196
3900 185 203
4000 190 212
4100 194 219
4200 197 225
4300 202 230
4400 207 235
4500 215 241
4600 220 247
4700 225 254
4800 233 259
4900 240 264
5000 245 268
5100 250 271
5200 255 275
5300 260 279
5400 265 282
5500 268 285
5600 270 286
5700 270 288
5800 275 287
5900 280 288
6000 285 291
6100 288 291
6200 290 290
6300 295 288
6400 295 286
6500 295 282
6600 293 280
6700 290 278
6800 290 274
6900 290 272
 

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Hmm, that's not all that great. I suppose area under the curve may be a bit higher, but my car with just a MAF and O/R H pipe is making 280rwhp. With all those other bolts ons and the intake the car shown is only 15rwhp higher. I would think the pulleys and LT headers would add that much at least, which makes the intake a 0 hp gain.

What year was that car? What was it making stock? How about before the intake went on?

That's the kind of info I want- a pre- and post-intake dyno.
 

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i have one. but not sure how good the comparison its going to be. its on a true blue built engine. stock compression, hp blower cams, ported heads, long tubes, return fuel system, and speed pro, and still breaking in engine so we don't have numbers up to 6500 rpm instead of 7500

right now peak is at 297 rwhp, and 250 rwtq. bear in mind that the torque is as steady as a rock and the horse power is rising like a rocket. and i have heard the cams are a big loss of torque.

also have the new acufab throttle body.
 

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Black96Cobra said:
What year was that car? What was it making stock? How about before the intake went on?
I don't know the year of the car or what it was making before the intake. That info wasn't provided to me by HCI.


Black96Cobra said:
That's the kind of info I want- a pre- and post-intake dyno.
In the May 2001 issue of MM&FF, there is an article on 4.6 4V bolt ons - the HCI intake being one of them.

Here are some details from the article for their 96-98 4V test Cobra (year was not disclosed).

rpm stock stock+HCI
3000 130 125
3500 155 155
4000 185 175
4500 210 190
5000 235 225
5500 245 245
5800 246 260
6400 230 265
7000 - 260

stock baseline peak: 246 SAE rwhp @5800
stock+ HCI intake peak: 265 SAE rwhp at 6400
stock + HCI+UPR inlet pipe+ MAC CAI: 276 SAE rwhp @ 6500
stock + HCI + UPR inlet pipe+MAC CAI+MAC LT's/catted H/Pro dumps: 290 SAE rwhp @ 6500

The MM&FF graph is only about 1.5" by 2.5", so the numbers above are about +/- 3 rwhp and +/- about 200 rpm.

All parts dynoed the same day.
Intake dynoed about 6 hours after the stock baseline pull
CAI and inlet about 6.5 hours after the stock baseline pull
Exhaust about 10 hours after the stock baseline pull
 

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Cool, that's the kind of thing I was looking for. It looks like on a stocker you really don't see any advantage until 5500+. My car (powerwise) is pretty close to stock- just a MAF and exhaust (no headers).

I'll have to think about this, a ported intake and IMRC deletes might be a better route for me- at least for the moment. I think PHP has ported stock intakes for $600, which even with the IMRC deletes and a chip is still probably less than the intake.

Thanks.
 
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