C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Hypercrap You Say??

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Old May 16, 2005 | 09:22 AM
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Default Hypercrap You Say??

My ex-2-be gave me a Hypertech chip for Christmas last year, and I remember reading all the criticism here about Hypertech. But it was a gift, so I put it in the car anyway. If nothing else, I figured it would cure a primary fan problem I was having.

This past Saturday one of the other sites hosted a dyno day at Motorsport Technologies, and since I only live two blocks from there, I figured I'd see what kind of impact the chip really had.

I made one pass with the chip, and one without. And it really did make a difference. From 2500 rpm all the way to redline it had a very positive effect, although it was especially noteworthy in the mid range.

At 3200 rpm it boost horsepower at the rear wheels another 15 ponies, and torque improved 28 lbs/ft. The max at the higher rpm saw a 6 hp gain and 7 lbs/ft.

Criticism or not, for $200 and ten minutes of my time, I'll take that any day. Hypertech works for me.
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Old May 16, 2005 | 09:28 AM
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How much hotter was your car on the second run?
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Old May 16, 2005 | 09:39 AM
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Originally Posted by CentralCoaster
How much hotter was your car on the second run?
Coolant temp was 185ish for both pulls. I had a little down time between them to remove the chip for the second run, and since I was first in line and there early, the guy let it come up to temp for the first pull.
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Old May 16, 2005 | 01:12 PM
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What year car? What mods? Let's see the sheets.
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Old May 16, 2005 | 01:23 PM
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Very interesting, especially considering that I have read a hypertech from a '93 with my very own chip burner. The only differences were slight changes to converter lockup, fan temps, and oh yeah they did away with the rev limiter.
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Old May 16, 2005 | 01:32 PM
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Old May 16, 2005 | 01:49 PM
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Originally Posted by Nathan Plemons
Very interesting, especially considering that I have read a hypertech from a '93 with my very own chip burner. The only differences were slight changes to converter lockup, fan temps, and oh yeah they did away with the rev limiter.
In my past experience with reading hypertech chips, I have found similar results, very little changes. Maybe Hypertech is improving their product.
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Old May 16, 2005 | 02:06 PM
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Originally Posted by steve9899
What year car? What mods? Let's see the sheets.
It's a '92, and other than the chip and a K&N, it's totally stock. As for putting the sheets up, I'm not sure how to do that. I used to be able to when I could get at my CF web site, but I can't seem to get into it these days. I've used Yahoo pics as my photo host recently, but when ever I try that, all I get is a red X. I've made the folder public, so I'm not sure why it does that. I bought a scanner this past weekend, so I'll try to scan it tonight and see what I can do.

Max numbers are:
without chip: 253.0 hp, 292.2 lbs/ft
with chip: 259.0 hp, 299.1 lbs/ft

Just my luck....(not that it matters) it would have been nice to see "300" for my torque number. Just 9/10ths short is my life story.
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Old May 16, 2005 | 02:25 PM
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If you had a custom chip burned by someone who took the time to dial it in, you'd see why Hypertech is loathed by so many. I think you would have been well over the 300 mark torque-wise with a properly burnt chip.
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Old May 16, 2005 | 02:40 PM
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You shouldve made 3 passes with the chip, and 3 passes without. That way you would be able to say its the chip thats helping.

Between 2 runs you cant say much of anything. Ive had my own car on the dyno and I've seen a jump of 5hp or so between two runs.
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Old May 16, 2005 | 02:57 PM
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Originally Posted by vader86
Between 2 runs you cant say much of anything. Ive had my own car on the dyno and I've seen a jump of 5hp or so between two runs.
And he's reporting four times that increase at 3200 rpm.

Multiple runs would be better, but 19hp, 28 lb-ft on the same dyno same day tends to sound not like repeatability error.
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Old May 16, 2005 | 03:20 PM
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Originally Posted by steve9899
And he's reporting four times that increase at 3200 rpm.

Multiple runs would be better, but 19hp, 28 lb-ft on the same dyno same day tends to sound not like repeatability error.
The runs were about 15 minutes apart so I could have time to remove the chip and the tester time to take care of some other odds and ends at the shop. The car had a little time to cool down, but not much.

The first pull he ran it up to about 5600 rpm, but the second time he only ran it to about 5000 rpm. Max torque came at about 4000, and max hp with the chip came on at 5600 rpm the first pull, and from the graph, seemed to be still climbing when he shut it off at 5000. Frankly I don't know why he shut it off at that point, but I didn't catch it till today.
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Old May 16, 2005 | 07:49 PM
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I now burn my own chips but when my car was close to stock with a mild cam my car was also faster wiith the Hypertech Thermomaster than with the stock prom. I was able to get the car into the high 12's with it. That included all the free mods, no pre cats, headers, de-screened MAF and drag radials. When I read the program they pulled out wot fuel throughout the curve and gave it alot of total timing.

John
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Old May 16, 2005 | 08:46 PM
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If you have pics of the dyno runs I can host for you. I think you got everyone's interest here.
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Old May 16, 2005 | 09:01 PM
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well I can vouch for the chip,sometimes.it worked on my 87,deffinately felt a SOTP improvement.I would swap chips&it would roast the tires more,&felt stronger all the way,used to get beat by a friends 94 6spd Z without it by a about a car,then installed chip & I would beat him by a car.however,when I bought one for my 90,I noticed absolutly nothing except delayed TC lockup,& fans turning on sooner.go figure.
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Old May 16, 2005 | 10:54 PM
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It seems like i've seen some, mainly Jet who make a honest effort towards performance. Alot of them are globally changed by a degree or somethign like that which does 0 for performance.

There are cheaper alternatives out there for actually dyno tuned programs.
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Old May 16, 2005 | 11:00 PM
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wendell, i'm a member of the vette club that hosted the dyno day at mti and i got my 89 l98 on the dyno early in the after noon and i was kind of disappointed with the way they did the pulls. i wanted to do a pull, make a few mods and then do a second pull to see if they helped or hurt. they did both pull back to back, 268 hp and 353 lbs. a few of the ls cars were pulling over 400 hp.
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To Hypercrap You Say??

Old May 17, 2005 | 01:55 AM
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"without chip: 253.0 hp, 292.2 lbs/ft
with chip: 259.0 hp, 299.1 lbs/ft"

This looks to me like a 6hp and 6ish TQ peak gain, and in another thread I see you may have bad plugs and wires, which means the curve may be choppy, and you'll see wide variances when that happens in some cases at various RPM, another thing that i have seen on my own car. Give the car a tune-up, and run it again.

Again, let me see conclusive dyno results with multiple tests of each before I'll acknowledge its the chip.

Last edited by vader86; May 17, 2005 at 02:01 AM.
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Old May 17, 2005 | 02:55 AM
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Next chance I get, I'll fix a slight exhaust leak at my manifold. Then, I'll take it over to LAPD and have it dynoe'd with and without the chip. I'll fully document it and try to duplicate conditions (coolant temp, for one). I have the thermomaster chip new in the box. Car is in perfect tune. I'm curious myself, if these are worth it. My schedule is pretty crazy the next week or so, but when I get a minute I'll schedule some runs andl post the results for you guys
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Old May 17, 2005 | 04:08 AM
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nice gains. it really all boils down to what worked and what didnt. nobody wants to really talk about all the money wasted for the same quest?
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