mods worth it

[justinj]

Fixing to do some mods, some I know will help other not so sure.
Ordering a KN Filter with open lid and flowmaster mufflers.
Are the following mods worth the performance and money.
Remove maf screen?
throttle body?
air foil?
performance chip?
Any other suggestions would be appreciated

 

[tomls1]

when i had my 86, i basically had all the same mods you're talking about, except i had borlas instead of flowmasters and i never did the throttle body. i felt that the combo of all these mods made quite a difference and they were all well worth it.

now, i never had the car dyno'd or pulled any 1/4 mile times. this is strictly seat of the pants, which, as everyone knows, can be very subjective. anyway, if i had another c4, i'd do the exact same mods a second time.

the reason i didn't bother with the tb is that i was told that unless you're going to do the manifold/heads etc, it's not worth it.

good luck, and enjoy.

 

[Mad-Mic]

so far i've done:

TB Bypass
cut air lid + K&N filter
air foil (was already there when bought)
descreened the MAF
eliminated the mufflers.

i can tell she picked up a good bit from these mods!

best part about it they were very cheap if not free

 

[Ken]

Are the following mods worth the performance and money.
Remove maf screen?

No. It's not worth risking damage to the MAF sensor unless you don't plan on serious racing or are seeking to wring every last ounce of horsepower out of your engine.

throttle body?

Only if other modifications are performed on the engine, such as cam, heads, exhaust, etc..

air foil?

No - period.

performance chip?

A chip reburn may benefit you some, but unless other mods take place you will still be limited to what can be acheived.

 

[vader86]

Do the K&N w/Open lid, do the exhaust work.
DONT change the TB, you dont need it.
DONT buy an airfoil, waste of money.
DONT buy any of these generic chips.

A chip will only really benefit you after youve done some serious mods: heads/cam/intake, etc.

Even then, however, a new chip may not free up but 5-10hp, it'll make its difference in fuel economy and drivability felt moreso.

The MAF screen thing is ok to do, dont try to remove the heat sink fins inside though, you'll probably damage the sensor element.

Buying an adjustable pressure regulator can help you in tuning it, but theres not much hp gain there.
Only other stuff to do really is take off the intake and start porting out everything. Then think about headers.

Gears are the best mod for LT1's.

 

[UB2 SLOW]

Vader is right about the mods. They can help, if you do them in conjunction with other mods.

The MAF screen thing is ok to do, dont try to remove the heat sink fins inside though, you'll probably damage the sensor element.

The LT1 MAFS dont have heat sinks. The L98 MAFs do though

 

[Doutdoor]

Best mods in my opinion are:

1) Change your rear end gears. I went from 2.59's to 3.54's & what a difference.
2) Install the K&N air filter and open up your box.
3) Performance Chip. I had Jeff (one of the moderator's burn one for me). I notice a much faster acceleration plus the car runs much cooler with the fans comming on at 190 deg.
4) Performance Mufflers. I went with the Magnaflow Mirror Finish Stainless Steel wide open mufflers. Man what a great sound. You get that idle burble, cruising you get a mild growl ( a little reasonance but not much - the sound is great). Punch the throttle and it roars. Believe me, you'll turn heads & get instant respect from anyone who would dare challenge your vette. The sound and the looks of these mufflers are awesome. The way a corvette was meant to sound. I highly recommend them. Check out their website and you'll see what I mean.
5) I did the air foil too. I'm not sure it adds much, but it's a fairly cheap investment.

Mine is a 92 LT1. With the ASR off, I smoke the tires from a standing start. The added torque and power is fantastic.

Good Luck...:cool

 

[invinceablevett]

doutdoor.......what is your 1/4 mile time?

 

[sothpaw]

TB bypass

I have to agree with Vader and the others, only the airfilter/lid,
mufflers are worth it among what you listed, assuming no other mods.

I highly recommend the Throttle body coolant bypass. Costs 2 bucks if you do it yourself. Maybe 20 if you have a mechanic do it. And, the effect is noticible in the 1/4mi.

--The only advantage of a generic chip is to get the fans on early.

 

[justinj]

how about relocating the the intake air temperature sensor to the air clearer duct.

 

[justinj]

hey southpaw how do you do the Throttle body coolant bypass.

 

[warren s]

The K&N filter I bought came with an air foil. May help in the mid and top end but will never show on the dyno. I cut the lid open also.

Do the fan relay over-ride and install a 160 therm, and the throttle body coolent bypass. I switch the fans on at 170, and turn a 13.4, not bad for a stock 95 A4

 

[vader86]

IAT sensor reloc is ok, dont expect any noticable change though just from that.

TB bypass, all you do is disconnect the coolant lines going in and out of the TB, and mate them. Its that simple.
Use a piece of pipe and two clamps, or reroute the coolant with some 5/8" heater hose.

 

[vettered91]

I don't have much more to add but I see you have a '95 and 95's can't change chip's so you'll have to get your computer re-programmed or get a used Hypertech programmer on ebay, focus in your intake-exhaust and rear end mods and enjoy!

 

[lt1vert]

You wont' really feel major seat of the pants improvements with the little mods until you change gears. then it's a whole new ballgame.

 

[invinceablevett]

lt1 vert.........What mods have you done and how fast is your 1/4 miles time?

 

[lt1vert]

lt1 vert.........What mods have you done and how fast is your 1/4 miles time?

I just have the basic bolt ons and tranny work.
Muffler elims, tb bypass, 160* stat, Ported Maf, k&n + open lid, Transgo shift kit, 3:73's, 2500 stall tc and an big freakin red stripe that doesn't do squat.

I've never brought it to the track but I did get it dynoed.

I had bad plugs which were causing the misfire up top. 289rwhp and 312lb/ft tq is pretty healthy. that's close to what stock grand sports are making.

I don't wanna bench race but if I had to guess, low 13's on a good day.

 

[KOPBET]

I don't have much more to add but I see you have a '95 and 95's can't change chip's so you'll have to get your computer re-programmed or get a used Hypertech programmer on ebay, focus in your intake-exhaust and rear end mods and enjoy!

I notice that the Hypertech web site FAQs state:

Can I use a Power Programmer to program more than one vehicle?

No. The Power Programmer III marries itself to the first vehicle it is connected to. However, you can program that vehicle back to stock at any time.

Is this not contradictory to buying a used Hypertech Programmer on E-Bay? What am I missing?

 

[lt1vert]

Is this not contradictory to buying a used Hypertech Programmer on E-Bay? What am I missing?

as long as the first user sets his car back to stock programming, the hypertech can be reused.

The hypertech has a custom program loaded to it from the factory. when you flash your ecm with the hpp programming, it will swap the stock settings on your ecm with the custom settings from hpp.
if you try to use it on another car, the only programming you have in the hpp is for your stock ecm and will not recognize the other car. but if you swap them again, the custom program will be back in the hpp and can be used with the new car.

Just make sure the first user returns his/her car to the stock programming first if you buy a used one.

 

[KOPBET]

Just make sure the first user returns his/her car to the stock programming first if you buy a used one.

Thanks. Sounds like that could be a real crap-shoot if you're buying.