[TundraV6]

I have installed my URD fuel kit and Im sort of wondering where the power is? I can barely chirp the tires in 2nd gear and I hear about alot of members roasting 33's from 20mph in first? It is somewhat of an improvement over just the sc but not incredibly noticeable. I know the truck isnt a sports car but I guess I was just expecting more... I am very happy there is no more pinging tho! Gadget are you going to be in the New England area anytime maybe it just needs some tuning?

 

[Troymm]

Did you tune it or just use the stock map?

 

[TundraV6]

Well I had it installed by a shop and they said the stock map was pretty acccurate?

 

[DCabTaco]

Have you regeared?

One thing to remember the tundra is heavier so spinning the wheels will be harder. Regearing wil help get that ratio back down.

Oh and while the default map is close,... there is nothing like a custome tune.

 

[TundraV6]

Have you regeared?

One thing to remember the tundra is heavier so spinning the wheels will be harder. Regearing wil help get that ratio back down.

Oh and while the default map is close,... there is nothing like a custome tune.

Do you suggest doing a dyno tune or a street tune?

 

[DCabTaco]

From what I hear a dyno tune will give you a better idea of where your truck puts out more power(AFR-wise), While a street tune will give you a better feel for true engine load performance. To start you should learn to tune the truck yourself before you take it in to a shop, unless you really don't feel you can do it. Start off with the closed loop cal and you will already see a difference. The open loop cal will finish up the job and give you that extra kick when you punch it. Go to the URD site and get the tuning procedures so you can see what is involved,... however you didn't answer my question about teh regearing. I still feel that is where most of your wheel spinning power is being lost.

 

[TundraV6]

No i havent regeared yet..but they are only 33's plus I just dont have the money to regear. The main reason I havent tuned yet is because I still need to purchase a wideband tuner and OBD II diagnostics tool. Would it be cheaper to just have a shop do this rather than purchase these items?

 

[DCabTaco]

Would it be cheaper to just have a shop do this rather than purchase these items?

It is hard to say. Only you can answer that question. First thing to think about is do you plan on modifying the truck some more? Do you like to know what is going on with your engine beyond just trouble codes? If so that OBDII reader from teh URD site is a good investment even if you do take it to a shop. I have used that thing on a number of cars to pinpoint different problems. most of which could have just been taken to autozone or something to get the code, but without the hassle. Also when you take the truck to get it dyno tuned it would save you some time(which = money) if your closed loop cal is already set. The next "cheapest" way to tune your truck is to find someone with a wideband near your are. You might have to modify it slightly if you ever regear since your engine loads will shift in the RPM band. I know you side they are only 33s, but from what I hear that is a big differents when it comes to performance. Well at least the performance you are looking for in smoking the wheels. So a regear should be in your future plans if that is still your goal.